Finding the Fourth Proportional to 141,307.92, 195,009.72 and 77,648

Step by Step Solution

1. Step 1: Write the proportion equation
   141,307.92 : 195,009.72 = 77,648 : x
2. Step 2: Convert to fraction form
   141,307.92/195,009.72 = 77,648/x
3. Step 3: Cross multiply
   141,307.92x = 195,009.72 × 77,648
4. Step 4: Simplify right side
   141,307.92x = 15,142,114,738.56
5. Step 5: Solve for x
   x = 15,142,114,738.56/141,307.92
6. Step 6: Final answer
   x = 107,156.87