Finding the Fourth Proportional to 47,178.80, 65,062.17 and 31,017.56

Step by Step Solution

1. Step 1: Write the proportion equation
   47,178.80 : 65,062.17 = 31,017.56 : x
2. Step 2: Convert to fraction form
   47,178.80/65,062.17 = 31,017.56/x
3. Step 3: Cross multiply
   47,178.80x = 65,062.17 × 31,017.56
4. Step 4: Simplify right side
   47,178.80x = 2,018,069,761.71
5. Step 5: Solve for x
   x = 2,018,069,761.71/47,178.80
6. Step 6: Final answer
   x = 42,774.93