Finding the Fourth Proportional to 42,290.72, 63,437.11 and 14,211.18

Step by Step Solution

1. Step 1: Write the proportion equation
   42,290.72 : 63,437.11 = 14,211.18 : x
2. Step 2: Convert to fraction form
   42,290.72/63,437.11 = 14,211.18/x
3. Step 3: Cross multiply
   42,290.72x = 63,437.11 × 14,211.18
4. Step 4: Simplify right side
   42,290.72x = 901,516,188.89
5. Step 5: Solve for x
   x = 901,516,188.89/42,290.72
6. Step 6: Final answer
   x = 21,317.12