Finding the Fourth Proportional to 78,401.16, 108,194.36 and 42,591.87

Step by Step Solution

1. Step 1: Write the proportion equation
   78,401.16 : 108,194.36 = 42,591.87 : x
2. Step 2: Convert to fraction form
   78,401.16/108,194.36 = 42,591.87/x
3. Step 3: Cross multiply
   78,401.16x = 108,194.36 × 42,591.87
4. Step 4: Simplify right side
   78,401.16x = 4,608,199,902.89
5. Step 5: Solve for x
   x = 4,608,199,902.89/78,401.16
6. Step 6: Final answer
   x = 58,777.19