Finding the Fourth Proportional to 99,390.50, 149,086.56 and 36,255.86

Step by Step Solution

1. Step 1: Write the proportion equation
   99,390.50 : 149,086.56 = 36,255.86 : x
2. Step 2: Convert to fraction form
   99,390.50/149,086.56 = 36,255.86/x
3. Step 3: Cross multiply
   99,390.50x = 149,086.56 × 36,255.86
4. Step 4: Simplify right side
   99,390.50x = 5,405,260,701.81
5. Step 5: Solve for x
   x = 5,405,260,701.81/99,390.50
6. Step 6: Final answer
   x = 54,384.08