Finding the Fourth Proportional to 99,425.58, 137,209.83 and 54,106.02

Step by Step Solution

1. Step 1: Write the proportion equation
   99,425.58 : 137,209.83 = 54,106.02 : x
2. Step 2: Convert to fraction form
   99,425.58/137,209.83 = 54,106.02/x
3. Step 3: Cross multiply
   99,425.58x = 137,209.83 × 54,106.02
4. Step 4: Simplify right side
   99,425.58x = 7,423,877,806.18
5. Step 5: Solve for x
   x = 7,423,877,806.18/99,425.58
6. Step 6: Final answer
   x = 74,667.68