Finding the Fourth Proportional to 76,870.76, 106,077.60 and 42,882.80

Step by Step Solution

1. Step 1: Write the proportion equation
   76,870.76 : 106,077.60 = 42,882.80 : x
2. Step 2: Convert to fraction form
   76,870.76/106,077.60 = 42,882.80/x
3. Step 3: Cross multiply
   76,870.76x = 106,077.60 × 42,882.80
4. Step 4: Simplify right side
   76,870.76x = 4,548,904,505.28
5. Step 5: Solve for x
   x = 4,548,904,505.28/76,870.76
6. Step 6: Final answer
   x = 59,176.01