Finding the Fourth Proportional to 42,826.04, 64,155.94 and 31,560.92

Step by Step Solution

1. Step 1: Write the proportion equation
   42,826.04 : 64,155.94 = 31,560.92 : x
2. Step 2: Convert to fraction form
   42,826.04/64,155.94 = 31,560.92/x
3. Step 3: Cross multiply
   42,826.04x = 64,155.94 × 31,560.92
4. Step 4: Simplify right side
   42,826.04x = 2,024,820,489.86
5. Step 5: Solve for x
   x = 2,024,820,489.86/42,826.04
6. Step 6: Final answer
   x = 47,280.12