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Finding the Fourth Proportional to 61,612.40, 92,418.60 and 57,724.40

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Solution

The fourth proportional to 61,612.40, 92,418.60 and 57,724.40 is: 86,586.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,612.40 : 92,418.60 = 57,724.40 : x
  2. Step 2: Convert to fraction form
    61,612.40/92,418.60 = 57,724.40/x
  3. Step 3: Cross multiply
    61,612.40x = 92,418.60 × 57,724.40
  4. Step 4: Simplify right side
    61,612.40x = 5,334,808,233.84
  5. Step 5: Solve for x
    x = 5,334,808,233.84/61,612.40
  6. Step 6: Final answer
    x = 86,586.60

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