Finding the Fourth Proportional to 115,442.16, 172,850.42 and 59,921.52

Step by Step Solution

1. Step 1: Write the proportion equation
   115,442.16 : 172,850.42 = 59,921.52 : x
2. Step 2: Convert to fraction form
   115,442.16/172,850.42 = 59,921.52/x
3. Step 3: Cross multiply
   115,442.16x = 172,850.42 × 59,921.52
4. Step 4: Simplify right side
   115,442.16x = 10,357,459,899.04
5. Step 5: Solve for x
   x = 10,357,459,899.04/115,442.16
6. Step 6: Final answer
   x = 89,719.91