Finding the Fourth Proportional to 42,397.57, 63,602.85 and 13,925.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,397.57 : 63,602.85 = 13,925.56 : x
2. Step 2: Convert to fraction form
   42,397.57/63,602.85 = 13,925.56/x
3. Step 3: Cross multiply
   42,397.57x = 63,602.85 × 13,925.56
4. Step 4: Simplify right side
   42,397.57x = 885,705,303.85
5. Step 5: Solve for x
   x = 885,705,303.85/42,397.57
6. Step 6: Final answer
   x = 20,890.47