Finding the Fourth Proportional to 143,364.32, 197,847.83 and 78,838.47

Step by Step Solution

1. Step 1: Write the proportion equation
   143,364.32 : 197,847.83 = 78,838.47 : x
2. Step 2: Convert to fraction form
   143,364.32/197,847.83 = 78,838.47/x
3. Step 3: Cross multiply
   143,364.32x = 197,847.83 × 78,838.47
4. Step 4: Simplify right side
   143,364.32x = 15,598,020,210.02
5. Step 5: Solve for x
   x = 15,598,020,210.02/143,364.32
6. Step 6: Final answer
   x = 108,799.88