Finding the Fourth Proportional to 78,400.41, 108,193.32 and 42,591.12

Step by Step Solution

1. Step 1: Write the proportion equation
   78,400.41 : 108,193.32 = 42,591.12 : x
2. Step 2: Convert to fraction form
   78,400.41/108,193.32 = 42,591.12/x
3. Step 3: Cross multiply
   78,400.41x = 108,193.32 × 42,591.12
4. Step 4: Simplify right side
   78,400.41x = 4,608,074,675.32
5. Step 5: Solve for x
   x = 4,608,074,675.32/78,400.41
6. Step 6: Final answer
   x = 58,776.16