Finding the Fourth Proportional to 99,045.38, 136,681.83 and 53,723.25

Step by Step Solution

1. Step 1: Write the proportion equation
   99,045.38 : 136,681.83 = 53,723.25 : x
2. Step 2: Convert to fraction form
   99,045.38/136,681.83 = 53,723.25/x
3. Step 3: Cross multiply
   99,045.38x = 136,681.83 × 53,723.25
4. Step 4: Simplify right side
   99,045.38x = 7,342,992,123.55
5. Step 5: Solve for x
   x = 7,342,992,123.55/99,045.38
6. Step 6: Final answer
   x = 74,137.65