Finding the Fourth Proportional to 77,843.84, 107,472.12 and 50,645.76

Step by Step Solution

1. Step 1: Write the proportion equation
   77,843.84 : 107,472.12 = 50,645.76 : x
2. Step 2: Convert to fraction form
   77,843.84/107,472.12 = 50,645.76/x
3. Step 3: Cross multiply
   77,843.84x = 107,472.12 × 50,645.76
4. Step 4: Simplify right side
   77,843.84x = 5,443,007,196.21
5. Step 5: Solve for x
   x = 5,443,007,196.21/77,843.84
6. Step 6: Final answer
   x = 69,922.13