Finding the Fourth Proportional to 119,691, 165,050.82 and 78,865.83

Step by Step Solution

1. Step 1: Write the proportion equation
   119,691 : 165,050.82 = 78,865.83 : x
2. Step 2: Convert to fraction form
   119,691/165,050.82 = 78,865.83/x
3. Step 3: Cross multiply
   119,691x = 165,050.82 × 78,865.83
4. Step 4: Simplify right side
   119,691x = 13,016,869,911.48
5. Step 5: Solve for x
   x = 13,016,869,911.48/119,691
6. Step 6: Final answer
   x = 108,753.96