Finding the Fourth Proportional to 78,891.34, 108,869.79 and 47,061.58

Step by Step Solution

1. Step 1: Write the proportion equation
   78,891.34 : 108,869.79 = 47,061.58 : x
2. Step 2: Convert to fraction form
   78,891.34/108,869.79 = 47,061.58/x
3. Step 3: Cross multiply
   78,891.34x = 108,869.79 × 47,061.58
4. Step 4: Simplify right side
   78,891.34x = 5,123,584,331.67
5. Step 5: Solve for x
   x = 5,123,584,331.67/78,891.34
6. Step 6: Final answer
   x = 64,944.83