Finding the Fourth Proportional to 90,003.48, 124,111.78 and 77,298.74

Step by Step Solution

1. Step 1: Write the proportion equation
   90,003.48 : 124,111.78 = 77,298.74 : x
2. Step 2: Convert to fraction form
   90,003.48/124,111.78 = 77,298.74/x
3. Step 3: Cross multiply
   90,003.48x = 124,111.78 × 77,298.74
4. Step 4: Simplify right side
   90,003.48x = 9,593,683,399.35
5. Step 5: Solve for x
   x = 9,593,683,399.35/90,003.48
6. Step 6: Final answer
   x = 106,592.36