Finding the Fourth Proportional to 42,158.79, 63,230.90 and 14,456.79

Step by Step Solution

1. Step 1: Write the proportion equation
   42,158.79 : 63,230.90 = 14,456.79 : x
2. Step 2: Convert to fraction form
   42,158.79/63,230.90 = 14,456.79/x
3. Step 3: Cross multiply
   42,158.79x = 63,230.90 × 14,456.79
4. Step 4: Simplify right side
   42,158.79x = 914,115,770.53
5. Step 5: Solve for x
   x = 914,115,770.53/42,158.79
6. Step 6: Final answer
   x = 21,682.69