Finding the Fourth Proportional to 99,746.50, 137,650.17 and 55,034.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,746.50 : 137,650.17 = 55,034.50 : x
2. Step 2: Convert to fraction form
   99,746.50/137,650.17 = 55,034.50/x
3. Step 3: Cross multiply
   99,746.50x = 137,650.17 × 55,034.50
4. Step 4: Simplify right side
   99,746.50x = 7,575,508,280.87
5. Step 5: Solve for x
   x = 7,575,508,280.87/99,746.50
6. Step 6: Final answer
   x = 75,947.61