Finding the Fourth Proportional to 77,915.52, 116,892.72 and 31,167.18

Step by Step Solution

1. Step 1: Write the proportion equation
   77,915.52 : 116,892.72 = 31,167.18 : x
2. Step 2: Convert to fraction form
   77,915.52/116,892.72 = 31,167.18/x
3. Step 3: Cross multiply
   77,915.52x = 116,892.72 × 31,167.18
4. Step 4: Simplify right side
   77,915.52x = 3,643,216,444.93
5. Step 5: Solve for x
   x = 3,643,216,444.93/77,915.52
6. Step 6: Final answer
   x = 46,758.55