Finding the Fourth Proportional to 99,314.18, 137,050.71 and 56,297.65

Step by Step Solution

1. Step 1: Write the proportion equation
   99,314.18 : 137,050.71 = 56,297.65 : x
2. Step 2: Convert to fraction form
   99,314.18/137,050.71 = 56,297.65/x
3. Step 3: Cross multiply
   99,314.18x = 137,050.71 × 56,297.65
4. Step 4: Simplify right side
   99,314.18x = 7,715,632,903.83
5. Step 5: Solve for x
   x = 7,715,632,903.83/99,314.18
6. Step 6: Final answer
   x = 77,689.14