Finding the Fourth Proportional to 99,619.50, 137,483.55 and 54,916.14

Step by Step Solution

1. Step 1: Write the proportion equation
   99,619.50 : 137,483.55 = 54,916.14 : x
2. Step 2: Convert to fraction form
   99,619.50/137,483.55 = 54,916.14/x
3. Step 3: Cross multiply
   99,619.50x = 137,483.55 × 54,916.14
4. Step 4: Simplify right side
   99,619.50x = 7,550,065,879.50
5. Step 5: Solve for x
   x = 7,550,065,879.50/99,619.50
6. Step 6: Final answer
   x = 75,789.04