Finding the Fourth Proportional to 76,870.21, 106,081.05 and 42,877.82

Step by Step Solution

1. Step 1: Write the proportion equation
   76,870.21 : 106,081.05 = 42,877.82 : x
2. Step 2: Convert to fraction form
   76,870.21/106,081.05 = 42,877.82/x
3. Step 3: Cross multiply
   76,870.21x = 106,081.05 × 42,877.82
4. Step 4: Simplify right side
   76,870.21x = 4,548,523,934.74
5. Step 5: Solve for x
   x = 4,548,523,934.74/76,870.21
6. Step 6: Final answer
   x = 59,171.48