Finding the Fourth Proportional to 72,870.53, 109,305.82 and 56,254.82

Step by Step Solution

1. Step 1: Write the proportion equation
   72,870.53 : 109,305.82 = 56,254.82 : x
2. Step 2: Convert to fraction form
   72,870.53/109,305.82 = 56,254.82/x
3. Step 3: Cross multiply
   72,870.53x = 109,305.82 × 56,254.82
4. Step 4: Simplify right side
   72,870.53x = 6,148,979,229.05
5. Step 5: Solve for x
   x = 6,148,979,229.05/72,870.53
6. Step 6: Final answer
   x = 84,382.25