Finding the Fourth Proportional to 72,003.45, 108,145.34 and 58,686.29

Step by Step Solution

1. Step 1: Write the proportion equation
   72,003.45 : 108,145.34 = 58,686.29 : x
2. Step 2: Convert to fraction form
   72,003.45/108,145.34 = 58,686.29/x
3. Step 3: Cross multiply
   72,003.45x = 108,145.34 × 58,686.29
4. Step 4: Simplify right side
   72,003.45x = 6,346,648,785.39
5. Step 5: Solve for x
   x = 6,346,648,785.39/72,003.45
6. Step 6: Final answer
   x = 88,143.68