Finding the Fourth Proportional to 91,726.73, 137,567.31 and 51,763.25

Step by Step Solution

1. Step 1: Write the proportion equation
   91,726.73 : 137,567.31 = 51,763.25 : x
2. Step 2: Convert to fraction form
   91,726.73/137,567.31 = 51,763.25/x
3. Step 3: Cross multiply
   91,726.73x = 137,567.31 × 51,763.25
4. Step 4: Simplify right side
   91,726.73x = 7,120,931,500.33
5. Step 5: Solve for x
   x = 7,120,931,500.33/91,726.73
6. Step 6: Final answer
   x = 77,632.02