Finding the Fourth Proportional to 115,761, 159,678.69 and 79,445.88

Step by Step Solution

1. Step 1: Write the proportion equation
   115,761 : 159,678.69 = 79,445.88 : x
2. Step 2: Convert to fraction form
   115,761/159,678.69 = 79,445.88/x
3. Step 3: Cross multiply
   115,761x = 159,678.69 × 79,445.88
4. Step 4: Simplify right side
   115,761x = 12,685,814,044.30
5. Step 5: Solve for x
   x = 12,685,814,044.30/115,761
6. Step 6: Final answer
   x = 109,586.25