Finding the Fourth Proportional to 115,071.59, 172,495.80 and 58,938.18

Step by Step Solution

1. Step 1: Write the proportion equation
   115,071.59 : 172,495.80 = 58,938.18 : x
2. Step 2: Convert to fraction form
   115,071.59/172,495.80 = 58,938.18/x
3. Step 3: Cross multiply
   115,071.59x = 172,495.80 × 58,938.18
4. Step 4: Simplify right side
   115,071.59x = 10,166,588,509.64
5. Step 5: Solve for x
   x = 10,166,588,509.64/115,071.59
6. Step 6: Final answer
   x = 88,350.12