Finding the Fourth Proportional to 115,123.18, 172,365.91 and 58,842.09

Step by Step Solution

1. Step 1: Write the proportion equation
   115,123.18 : 172,365.91 = 58,842.09 : x
2. Step 2: Convert to fraction form
   115,123.18/172,365.91 = 58,842.09/x
3. Step 3: Cross multiply
   115,123.18x = 172,365.91 × 58,842.09
4. Step 4: Simplify right side
   115,123.18x = 10,142,370,389.15
5. Step 5: Solve for x
   x = 10,142,370,389.15/115,123.18
6. Step 6: Final answer
   x = 88,100.16