Finding the Fourth Proportional to 60,921.77, 91,389.94 and 21,470.72

Step by Step Solution

1. Step 1: Write the proportion equation
   60,921.77 : 91,389.94 = 21,470.72 : x
2. Step 2: Convert to fraction form
   60,921.77/91,389.94 = 21,470.72/x
3. Step 3: Cross multiply
   60,921.77x = 91,389.94 × 21,470.72
4. Step 4: Simplify right side
   60,921.77x = 1,962,207,301.93
5. Step 5: Solve for x
   x = 1,962,207,301.93/60,921.77
6. Step 6: Final answer
   x = 32,208.64