Finding the Fourth Proportional to 138,131.55, 207,235.61 and 58,150.24

Step by Step Solution

1. Step 1: Write the proportion equation
   138,131.55 : 207,235.61 = 58,150.24 : x
2. Step 2: Convert to fraction form
   138,131.55/207,235.61 = 58,150.24/x
3. Step 3: Cross multiply
   138,131.55x = 207,235.61 × 58,150.24
4. Step 4: Simplify right side
   138,131.55x = 12,050,800,458.05
5. Step 5: Solve for x
   x = 12,050,800,458.05/138,131.55
6. Step 6: Final answer
   x = 87,241.48