Finding the Fourth Proportional to 78,401.32, 116,772.15 and 78,019.02

Step by Step Solution

1. Step 1: Write the proportion equation
   78,401.32 : 116,772.15 = 78,019.02 : x
2. Step 2: Convert to fraction form
   78,401.32/116,772.15 = 78,019.02/x
3. Step 3: Cross multiply
   78,401.32x = 116,772.15 × 78,019.02
4. Step 4: Simplify right side
   78,401.32x = 9,110,448,998.86
5. Step 5: Solve for x
   x = 9,110,448,998.86/78,401.32
6. Step 6: Final answer
   x = 116,202.75