Finding the Fourth Proportional to 103,985.31, 143,501.41 and 58,664.17

Step by Step Solution

1. Step 1: Write the proportion equation
   103,985.31 : 143,501.41 = 58,664.17 : x
2. Step 2: Convert to fraction form
   103,985.31/143,501.41 = 58,664.17/x
3. Step 3: Cross multiply
   103,985.31x = 143,501.41 × 58,664.17
4. Step 4: Simplify right side
   103,985.31x = 8,418,391,111.48
5. Step 5: Solve for x
   x = 8,418,391,111.48/103,985.31
6. Step 6: Final answer
   x = 80,957.50