Finding the Fourth Proportional to 90,493.58, 124,839.15 and 56,480.06

Step by Step Solution

1. Step 1: Write the proportion equation
   90,493.58 : 124,839.15 = 56,480.06 : x
2. Step 2: Convert to fraction form
   90,493.58/124,839.15 = 56,480.06/x
3. Step 3: Cross multiply
   90,493.58x = 124,839.15 × 56,480.06
4. Step 4: Simplify right side
   90,493.58x = 7,050,922,682.35
5. Step 5: Solve for x
   x = 7,050,922,682.35/90,493.58
6. Step 6: Final answer
   x = 77,916.28