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Finding the Fourth Proportional to 66,707.15, 100,075.30 and 19,956.38

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Solution

The fourth proportional to 66,707.15, 100,075.30 and 19,956.38 is: 29,938.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,707.15 : 100,075.30 = 19,956.38 : x
  2. Step 2: Convert to fraction form
    66,707.15/100,075.30 = 19,956.38/x
  3. Step 3: Cross multiply
    66,707.15x = 100,075.30 × 19,956.38
  4. Step 4: Simplify right side
    66,707.15x = 1,997,140,165.15
  5. Step 5: Solve for x
    x = 1,997,140,165.15/66,707.15
  6. Step 6: Final answer
    x = 29,938.92

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