Finding the Fourth Proportional to 99,426.24, 137,208.24 and 54,104.40

Step by Step Solution

1. Step 1: Write the proportion equation
   99,426.24 : 137,208.24 = 54,104.40 : x
2. Step 2: Convert to fraction form
   99,426.24/137,208.24 = 54,104.40/x
3. Step 3: Cross multiply
   99,426.24x = 137,208.24 × 54,104.40
4. Step 4: Simplify right side
   99,426.24x = 7,423,569,500.26
5. Step 5: Solve for x
   x = 7,423,569,500.26/99,426.24
6. Step 6: Final answer
   x = 74,664.09