Finding the Fourth Proportional to 56,865.39, 78,448.85 and 32,978.22

Step by Step Solution

1. Step 1: Write the proportion equation
   56,865.39 : 78,448.85 = 32,978.22 : x
2. Step 2: Convert to fraction form
   56,865.39/78,448.85 = 32,978.22/x
3. Step 3: Cross multiply
   56,865.39x = 78,448.85 × 32,978.22
4. Step 4: Simplify right side
   56,865.39x = 2,587,103,269.16
5. Step 5: Solve for x
   x = 2,587,103,269.16/56,865.39
6. Step 6: Final answer
   x = 45,495.22