Finding the Fourth Proportional to 99,617.84, 137,472.67 and 56,597.41

Step by Step Solution

1. Step 1: Write the proportion equation
   99,617.84 : 137,472.67 = 56,597.41 : x
2. Step 2: Convert to fraction form
   99,617.84/137,472.67 = 56,597.41/x
3. Step 3: Cross multiply
   99,617.84x = 137,472.67 × 56,597.41
4. Step 4: Simplify right side
   99,617.84x = 7,780,597,067.78
5. Step 5: Solve for x
   x = 7,780,597,067.78/99,617.84
6. Step 6: Final answer
   x = 78,104.45