Finding the Fourth Proportional to 57,067.04, 78,780.12 and 37,978.58

Step by Step Solution

1. Step 1: Write the proportion equation
   57,067.04 : 78,780.12 = 37,978.58 : x
2. Step 2: Convert to fraction form
   57,067.04/78,780.12 = 37,978.58/x
3. Step 3: Cross multiply
   57,067.04x = 78,780.12 × 37,978.58
4. Step 4: Simplify right side
   57,067.04x = 2,991,957,089.83
5. Step 5: Solve for x
   x = 2,991,957,089.83/57,067.04
6. Step 6: Final answer
   x = 52,428.81