Finding the Fourth Proportional to 42,211.56, 63,179.98 and 31,113.80

Step by Step Solution

1. Step 1: Write the proportion equation
   42,211.56 : 63,179.98 = 31,113.80 : x
2. Step 2: Convert to fraction form
   42,211.56/63,179.98 = 31,113.80/x
3. Step 3: Cross multiply
   42,211.56x = 63,179.98 × 31,113.80
4. Step 4: Simplify right side
   42,211.56x = 1,965,769,261.72
5. Step 5: Solve for x
   x = 1,965,769,261.72/42,211.56
6. Step 6: Final answer
   x = 46,569.45