Finding the Fourth Proportional to 103,904.72, 143,385.64 and 58,582.31

Step by Step Solution

1. Step 1: Write the proportion equation
   103,904.72 : 143,385.64 = 58,582.31 : x
2. Step 2: Convert to fraction form
   103,904.72/143,385.64 = 58,582.31/x
3. Step 3: Cross multiply
   103,904.72x = 143,385.64 × 58,582.31
4. Step 4: Simplify right side
   103,904.72x = 8,399,862,012.03
5. Step 5: Solve for x
   x = 8,399,862,012.03/103,904.72
6. Step 6: Final answer
   x = 80,841.97