Finding the Fourth Proportional to 105,248.24, 145,396.25 and 91,076.48

Step by Step Solution

1. Step 1: Write the proportion equation
   105,248.24 : 145,396.25 = 91,076.48 : x
2. Step 2: Convert to fraction form
   105,248.24/145,396.25 = 91,076.48/x
3. Step 3: Cross multiply
   105,248.24x = 145,396.25 × 91,076.48
4. Step 4: Simplify right side
   105,248.24x = 13,242,178,359.61
5. Step 5: Solve for x
   x = 13,242,178,359.61/105,248.24
6. Step 6: Final answer
   x = 125,818.53