Finding the Fourth Proportional to 114,861.88, 172,399.43 and 58,742.09

Step by Step Solution

1. Step 1: Write the proportion equation
   114,861.88 : 172,399.43 = 58,742.09 : x
2. Step 2: Convert to fraction form
   114,861.88/172,399.43 = 58,742.09/x
3. Step 3: Cross multiply
   114,861.88x = 172,399.43 × 58,742.09
4. Step 4: Simplify right side
   114,861.88x = 10,127,102,833.01
5. Step 5: Solve for x
   x = 10,127,102,833.01/114,861.88
6. Step 6: Final answer
   x = 88,167.66