Finding the Fourth Proportional to 90,187.05, 124,435.71 and 58,317.60

Step by Step Solution

1. Step 1: Write the proportion equation
   90,187.05 : 124,435.71 = 58,317.60 : x
2. Step 2: Convert to fraction form
   90,187.05/124,435.71 = 58,317.60/x
3. Step 3: Cross multiply
   90,187.05x = 124,435.71 × 58,317.60
4. Step 4: Simplify right side
   90,187.05x = 7,256,791,961.50
5. Step 5: Solve for x
   x = 7,256,791,961.50/90,187.05
6. Step 6: Final answer
   x = 80,463.79