Finding the Fourth Proportional to 42,421.55, 63,606.15 and 14,338.96

Step by Step Solution

1. Step 1: Write the proportion equation
   42,421.55 : 63,606.15 = 14,338.96 : x
2. Step 2: Convert to fraction form
   42,421.55/63,606.15 = 14,338.96/x
3. Step 3: Cross multiply
   42,421.55x = 63,606.15 × 14,338.96
4. Step 4: Simplify right side
   42,421.55x = 912,045,881.59
5. Step 5: Solve for x
   x = 912,045,881.59/42,421.55
6. Step 6: Final answer
   x = 21,499.59