Finding the Fourth Proportional to 100,538.56, 150,807.76 and 25,658.72

Step by Step Solution

1. Step 1: Write the proportion equation
   100,538.56 : 150,807.76 = 25,658.72 : x
2. Step 2: Convert to fraction form
   100,538.56/150,807.76 = 25,658.72/x
3. Step 3: Cross multiply
   100,538.56x = 150,807.76 × 25,658.72
4. Step 4: Simplify right side
   100,538.56x = 3,869,534,087.67
5. Step 5: Solve for x
   x = 3,869,534,087.67/100,538.56
6. Step 6: Final answer
   x = 38,488.06