Finding the Fourth Proportional to 78,370.74, 108,152.42 and 42,561.45

Step by Step Solution

1. Step 1: Write the proportion equation
   78,370.74 : 108,152.42 = 42,561.45 : x
2. Step 2: Convert to fraction form
   78,370.74/108,152.42 = 42,561.45/x
3. Step 3: Cross multiply
   78,370.74x = 108,152.42 × 42,561.45
4. Step 4: Simplify right side
   78,370.74x = 4,603,123,603.40
5. Step 5: Solve for x
   x = 4,603,123,603.40/78,370.74
6. Step 6: Final answer
   x = 58,735.23