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Finding the Fourth Proportional to 212,111.40, 318,159.78 and 54,341.40

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Solution

The fourth proportional to 212,111.40, 318,159.78 and 54,341.40 is: 81,510.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,111.40 : 318,159.78 = 54,341.40 : x
  2. Step 2: Convert to fraction form
    212,111.40/318,159.78 = 54,341.40/x
  3. Step 3: Cross multiply
    212,111.40x = 318,159.78 × 54,341.40
  4. Step 4: Simplify right side
    212,111.40x = 17,289,247,868.89
  5. Step 5: Solve for x
    x = 17,289,247,868.89/212,111.40
  6. Step 6: Final answer
    x = 81,510.22

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