Finding the Fourth Proportional to 76,108.69, 105,027.41 and 42,118.61

Step by Step Solution

1. Step 1: Write the proportion equation
   76,108.69 : 105,027.41 = 42,118.61 : x
2. Step 2: Convert to fraction form
   76,108.69/105,027.41 = 42,118.61/x
3. Step 3: Cross multiply
   76,108.69x = 105,027.41 × 42,118.61
4. Step 4: Simplify right side
   76,108.69x = 4,423,608,785.10
5. Step 5: Solve for x
   x = 4,423,608,785.10/76,108.69
6. Step 6: Final answer
   x = 58,122.25