Finding the Fourth Proportional to 99,337.46, 137,085.41 and 55,730.09

Step by Step Solution

1. Step 1: Write the proportion equation
   99,337.46 : 137,085.41 = 55,730.09 : x
2. Step 2: Convert to fraction form
   99,337.46/137,085.41 = 55,730.09/x
3. Step 3: Cross multiply
   99,337.46x = 137,085.41 × 55,730.09
4. Step 4: Simplify right side
   99,337.46x = 7,639,782,719.03
5. Step 5: Solve for x
   x = 7,639,782,719.03/99,337.46
6. Step 6: Final answer
   x = 76,907.37