Finding the Fourth Proportional to 99,326.25, 137,069.82 and 56,883.87

Step by Step Solution

1. Step 1: Write the proportion equation
   99,326.25 : 137,069.82 = 56,883.87 : x
2. Step 2: Convert to fraction form
   99,326.25/137,069.82 = 56,883.87/x
3. Step 3: Cross multiply
   99,326.25x = 137,069.82 × 56,883.87
4. Step 4: Simplify right side
   99,326.25x = 7,797,061,821.80
5. Step 5: Solve for x
   x = 7,797,061,821.80/99,326.25
6. Step 6: Final answer
   x = 78,499.51