Finding the Fourth Proportional to 60,318.72, 90,535.68 and 36,990.72

Step by Step Solution

1. Step 1: Write the proportion equation
   60,318.72 : 90,535.68 = 36,990.72 : x
2. Step 2: Convert to fraction form
   60,318.72/90,535.68 = 36,990.72/x
3. Step 3: Cross multiply
   60,318.72x = 90,535.68 × 36,990.72
4. Step 4: Simplify right side
   60,318.72x = 3,348,979,988.89
5. Step 5: Solve for x
   x = 3,348,979,988.89/60,318.72
6. Step 6: Final answer
   x = 55,521.40