Finding the Fourth Proportional to 137,216.92, 205,923.78 and 58,386.52

Step by Step Solution

1. Step 1: Write the proportion equation
   137,216.92 : 205,923.78 = 58,386.52 : x
2. Step 2: Convert to fraction form
   137,216.92/205,923.78 = 58,386.52/x
3. Step 3: Cross multiply
   137,216.92x = 205,923.78 × 58,386.52
4. Step 4: Simplify right side
   137,216.92x = 12,023,172,899.45
5. Step 5: Solve for x
   x = 12,023,172,899.45/137,216.92
6. Step 6: Final answer
   x = 87,621.65