Finding the Fourth Proportional to 191,300.12, 286,947.84 and 86,044.76

Step by Step Solution

1. Step 1: Write the proportion equation
   191,300.12 : 286,947.84 = 86,044.76 : x
2. Step 2: Convert to fraction form
   191,300.12/286,947.84 = 86,044.76/x
3. Step 3: Cross multiply
   191,300.12x = 286,947.84 × 86,044.76
4. Step 4: Simplify right side
   191,300.12x = 24,690,358,025.32
5. Step 5: Solve for x
   x = 24,690,358,025.32/191,300.12
6. Step 6: Final answer
   x = 129,066.09