Finding the Fourth Proportional to 42,120.85, 63,111.82 and 37,780.33

Step by Step Solution

1. Step 1: Write the proportion equation
   42,120.85 : 63,111.82 = 37,780.33 : x
2. Step 2: Convert to fraction form
   42,120.85/63,111.82 = 37,780.33/x
3. Step 3: Cross multiply
   42,120.85x = 63,111.82 × 37,780.33
4. Step 4: Simplify right side
   42,120.85x = 2,384,385,386.50
5. Step 5: Solve for x
   x = 2,384,385,386.50/42,120.85
6. Step 6: Final answer
   x = 56,608.20