Finding the Fourth Proportional to 58,221.50, 80,345.67 and 31,725.50

Step by Step Solution

1. Step 1: Write the proportion equation
   58,221.50 : 80,345.67 = 31,725.50 : x
2. Step 2: Convert to fraction form
   58,221.50/80,345.67 = 31,725.50/x
3. Step 3: Cross multiply
   58,221.50x = 80,345.67 × 31,725.50
4. Step 4: Simplify right side
   58,221.50x = 2,549,006,553.59
5. Step 5: Solve for x
   x = 2,549,006,553.59/58,221.50
6. Step 6: Final answer
   x = 43,781.19