Finding the Fourth Proportional to 99,618.18, 137,468.22 and 54,296.10

Step by Step Solution

1. Step 1: Write the proportion equation
   99,618.18 : 137,468.22 = 54,296.10 : x
2. Step 2: Convert to fraction form
   99,618.18/137,468.22 = 54,296.10/x
3. Step 3: Cross multiply
   99,618.18x = 137,468.22 × 54,296.10
4. Step 4: Simplify right side
   99,618.18x = 7,463,988,219.94
5. Step 5: Solve for x
   x = 7,463,988,219.94/99,618.18
6. Step 6: Final answer
   x = 74,925.96