Finding the Fourth Proportional to 99,426.56, 137,185.92 and 56,395.79

Step by Step Solution

1. Step 1: Write the proportion equation
   99,426.56 : 137,185.92 = 56,395.79 : x
2. Step 2: Convert to fraction form
   99,426.56/137,185.92 = 56,395.79/x
3. Step 3: Cross multiply
   99,426.56x = 137,185.92 × 56,395.79
4. Step 4: Simplify right side
   99,426.56x = 7,736,707,649.35
5. Step 5: Solve for x
   x = 7,736,707,649.35/99,426.56
6. Step 6: Final answer
   x = 77,813.29