Finding the Fourth Proportional to 64,915.30, 89,569.02 and 42,251.92

Step by Step Solution

1. Step 1: Write the proportion equation
   64,915.30 : 89,569.02 = 42,251.92 : x
2. Step 2: Convert to fraction form
   64,915.30/89,569.02 = 42,251.92/x
3. Step 3: Cross multiply
   64,915.30x = 89,569.02 × 42,251.92
4. Step 4: Simplify right side
   64,915.30x = 3,784,463,067.52
5. Step 5: Solve for x
   x = 3,784,463,067.52/64,915.30
6. Step 6: Final answer
   x = 58,298.48