Finding the Fourth Proportional to 105,789.32, 145,989.41 and 58,042.86

Step by Step Solution

1. Step 1: Write the proportion equation
   105,789.32 : 145,989.41 = 58,042.86 : x
2. Step 2: Convert to fraction form
   105,789.32/145,989.41 = 58,042.86/x
3. Step 3: Cross multiply
   105,789.32x = 145,989.41 × 58,042.86
4. Step 4: Simplify right side
   105,789.32x = 8,473,642,595.90
5. Step 5: Solve for x
   x = 8,473,642,595.90/105,789.32
6. Step 6: Final answer
   x = 80,099.23