Finding the Fourth Proportional to 152,860.70, 229,082.56 and 58,040.12

Step by Step Solution

1. Step 1: Write the proportion equation
   152,860.70 : 229,082.56 = 58,040.12 : x
2. Step 2: Convert to fraction form
   152,860.70/229,082.56 = 58,040.12/x
3. Step 3: Cross multiply
   152,860.70x = 229,082.56 × 58,040.12
4. Step 4: Simplify right side
   152,860.70x = 13,295,979,272.31
5. Step 5: Solve for x
   x = 13,295,979,272.31/152,860.70
6. Step 6: Final answer
   x = 86,981.02