Finding the Fourth Proportional to 158,565, 218,826.32 and 86,947.77

Step by Step Solution

1. Step 1: Write the proportion equation
   158,565 : 218,826.32 = 86,947.77 : x
2. Step 2: Convert to fraction form
   158,565/218,826.32 = 86,947.77/x
3. Step 3: Cross multiply
   158,565x = 218,826.32 × 86,947.77
4. Step 4: Simplify right side
   158,565x = 19,026,460,106.57
5. Step 5: Solve for x
   x = 19,026,460,106.57/158,565
6. Step 6: Final answer
   x = 119,991.55