Finding the Fourth Proportional to 137,434.08, 205,956.72 and 58,468.80

Step by Step Solution

1. Step 1: Write the proportion equation
   137,434.08 : 205,956.72 = 58,468.80 : x
2. Step 2: Convert to fraction form
   137,434.08/205,956.72 = 58,468.80/x
3. Step 3: Cross multiply
   137,434.08x = 205,956.72 × 58,468.80
4. Step 4: Simplify right side
   137,434.08x = 12,042,042,270.34
5. Step 5: Solve for x
   x = 12,042,042,270.34/137,434.08
6. Step 6: Final answer
   x = 87,620.50