Finding the Fourth Proportional to 137,047.24, 205,674.72 and 58,216.78

Step by Step Solution

1. Step 1: Write the proportion equation
   137,047.24 : 205,674.72 = 58,216.78 : x
2. Step 2: Convert to fraction form
   137,047.24/205,674.72 = 58,216.78/x
3. Step 3: Cross multiply
   137,047.24x = 205,674.72 × 58,216.78
4. Step 4: Simplify right side
   137,047.24x = 11,973,719,925.80
5. Step 5: Solve for x
   x = 11,973,719,925.80/137,047.24
6. Step 6: Final answer
   x = 87,369.29