Finding the Fourth Proportional to 78,350.42, 108,123.72 and 42,540.32

Step by Step Solution

1. Step 1: Write the proportion equation
   78,350.42 : 108,123.72 = 42,540.32 : x
2. Step 2: Convert to fraction form
   78,350.42/108,123.72 = 42,540.32/x
3. Step 3: Cross multiply
   78,350.42x = 108,123.72 × 42,540.32
4. Step 4: Simplify right side
   78,350.42x = 4,599,617,648.39
5. Step 5: Solve for x
   x = 4,599,617,648.39/78,350.42
6. Step 6: Final answer
   x = 58,705.72