Finding the Fourth Proportional to 99,343.83, 137,084.67 and 56,314.83

Step by Step Solution

1. Step 1: Write the proportion equation
   99,343.83 : 137,084.67 = 56,314.83 : x
2. Step 2: Convert to fraction form
   99,343.83/137,084.67 = 56,314.83/x
3. Step 3: Cross multiply
   99,343.83x = 137,084.67 × 56,314.83
4. Step 4: Simplify right side
   99,343.83x = 7,719,899,886.66
5. Step 5: Solve for x
   x = 7,719,899,886.66/99,343.83
6. Step 6: Final answer
   x = 77,708.90