Finding the Fourth Proportional to 56,928.24, 85,401.54 and 21,392.33

Step by Step Solution

1. Step 1: Write the proportion equation
   56,928.24 : 85,401.54 = 21,392.33 : x
2. Step 2: Convert to fraction form
   56,928.24/85,401.54 = 21,392.33/x
3. Step 3: Cross multiply
   56,928.24x = 85,401.54 × 21,392.33
4. Step 4: Simplify right side
   56,928.24x = 1,826,937,499.18
5. Step 5: Solve for x
   x = 1,826,937,499.18/56,928.24
6. Step 6: Final answer
   x = 32,091.94