Finding the Fourth Proportional to 60,756.91, 91,079.89 and 21,292.50

Step by Step Solution

1. Step 1: Write the proportion equation
   60,756.91 : 91,079.89 = 21,292.50 : x
2. Step 2: Convert to fraction form
   60,756.91/91,079.89 = 21,292.50/x
3. Step 3: Cross multiply
   60,756.91x = 91,079.89 × 21,292.50
4. Step 4: Simplify right side
   60,756.91x = 1,939,318,197.43
5. Step 5: Solve for x
   x = 1,939,318,197.43/60,756.91
6. Step 6: Final answer
   x = 31,919.30