Finding the Fourth Proportional to 89,035.60, 133,503.48 and 60,987.33

Step by Step Solution

1. Step 1: Write the proportion equation
   89,035.60 : 133,503.48 = 60,987.33 : x
2. Step 2: Convert to fraction form
   89,035.60/133,503.48 = 60,987.33/x
3. Step 3: Cross multiply
   89,035.60x = 133,503.48 × 60,987.33
4. Step 4: Simplify right side
   89,035.60x = 8,142,019,818.45
5. Step 5: Solve for x
   x = 8,142,019,818.45/89,035.60
6. Step 6: Final answer
   x = 91,446.79