Finding the Fourth Proportional to 191,170.17, 286,789.88 and 78,787.83

Step by Step Solution

1. Step 1: Write the proportion equation
   191,170.17 : 286,789.88 = 78,787.83 : x
2. Step 2: Convert to fraction form
   191,170.17/286,789.88 = 78,787.83/x
3. Step 3: Cross multiply
   191,170.17x = 286,789.88 × 78,787.83
4. Step 4: Simplify right side
   191,170.17x = 22,595,553,583.59
5. Step 5: Solve for x
   x = 22,595,553,583.59/191,170.17
6. Step 6: Final answer
   x = 118,196.02