Finding the Fourth Proportional to 42,434.15, 63,690.10 and 42,275.39

Step by Step Solution

1. Step 1: Write the proportion equation
   42,434.15 : 63,690.10 = 42,275.39 : x
2. Step 2: Convert to fraction form
   42,434.15/63,690.10 = 42,275.39/x
3. Step 3: Cross multiply
   42,434.15x = 63,690.10 × 42,275.39
4. Step 4: Simplify right side
   42,434.15x = 2,692,523,392.50
5. Step 5: Solve for x
   x = 2,692,523,392.50/42,434.15
6. Step 6: Final answer
   x = 63,451.81