Finding the Fourth Proportional to 141,442.27, 195,191.72 and 77,780.50

Step by Step Solution

1. Step 1: Write the proportion equation
   141,442.27 : 195,191.72 = 77,780.50 : x
2. Step 2: Convert to fraction form
   141,442.27/195,191.72 = 77,780.50/x
3. Step 3: Cross multiply
   141,442.27x = 195,191.72 × 77,780.50
4. Step 4: Simplify right side
   141,442.27x = 15,182,109,577.46
5. Step 5: Solve for x
   x = 15,182,109,577.46/141,442.27
6. Step 6: Final answer
   x = 107,337.85