Finding the Fourth Proportional to 72,929.58, 100,642.95 and 42,308.61

Step by Step Solution

1. Step 1: Write the proportion equation
   72,929.58 : 100,642.95 = 42,308.61 : x
2. Step 2: Convert to fraction form
   72,929.58/100,642.95 = 42,308.61/x
3. Step 3: Cross multiply
   72,929.58x = 100,642.95 × 42,308.61
4. Step 4: Simplify right side
   72,929.58x = 4,258,063,320.80
5. Step 5: Solve for x
   x = 4,258,063,320.80/72,929.58
6. Step 6: Final answer
   x = 58,385.96