Finding the Fourth Proportional to 42,300.79, 63,448.85 and 14,217.95

Step by Step Solution

1. Step 1: Write the proportion equation
   42,300.79 : 63,448.85 = 14,217.95 : x
2. Step 2: Convert to fraction form
   42,300.79/63,448.85 = 14,217.95/x
3. Step 3: Cross multiply
   42,300.79x = 63,448.85 × 14,217.95
4. Step 4: Simplify right side
   42,300.79x = 902,112,576.86
5. Step 5: Solve for x
   x = 902,112,576.86/42,300.79
6. Step 6: Final answer
   x = 21,326.14