Finding the Fourth Proportional to 42,121.85, 63,113.32 and 37,781.33

Step by Step Solution

1. Step 1: Write the proportion equation
   42,121.85 : 63,113.32 = 37,781.33 : x
2. Step 2: Convert to fraction form
   42,121.85/63,113.32 = 37,781.33/x
3. Step 3: Cross multiply
   42,121.85x = 63,113.32 × 37,781.33
4. Step 4: Simplify right side
   42,121.85x = 2,384,505,170.32
5. Step 5: Solve for x
   x = 2,384,505,170.32/42,121.85
6. Step 6: Final answer
   x = 56,609.70