Finding the Fourth Proportional to 56,870.32, 78,391.74 and 38,934.22

Step by Step Solution

1. Step 1: Write the proportion equation
   56,870.32 : 78,391.74 = 38,934.22 : x
2. Step 2: Convert to fraction form
   56,870.32/78,391.74 = 38,934.22/x
3. Step 3: Cross multiply
   56,870.32x = 78,391.74 × 38,934.22
4. Step 4: Simplify right side
   56,870.32x = 3,052,121,251.34
5. Step 5: Solve for x
   x = 3,052,121,251.34/56,870.32
6. Step 6: Final answer
   x = 53,668.09