Finding the Fourth Proportional to 90,211.76, 124,494.28 and 58,435.96

Step by Step Solution

1. Step 1: Write the proportion equation
   90,211.76 : 124,494.28 = 58,435.96 : x
2. Step 2: Convert to fraction form
   90,211.76/124,494.28 = 58,435.96/x
3. Step 3: Cross multiply
   90,211.76x = 124,494.28 × 58,435.96
4. Step 4: Simplify right side
   90,211.76x = 7,274,942,766.31
5. Step 5: Solve for x
   x = 7,274,942,766.31/90,211.76
6. Step 6: Final answer
   x = 80,642.95