Finding the Fourth Proportional to 99,301.62, 137,038.86 and 56,873.82

Step by Step Solution

1. Step 1: Write the proportion equation
   99,301.62 : 137,038.86 = 56,873.82 : x
2. Step 2: Convert to fraction form
   99,301.62/137,038.86 = 56,873.82/x
3. Step 3: Cross multiply
   99,301.62x = 137,038.86 × 56,873.82
4. Step 4: Simplify right side
   99,301.62x = 7,793,923,456.65
5. Step 5: Solve for x
   x = 7,793,923,456.65/99,301.62
6. Step 6: Final answer
   x = 78,487.37