Finding the Fourth Proportional to 159,615.72, 220,279.05 and 91,632.83

Step by Step Solution

1. Step 1: Write the proportion equation
   159,615.72 : 220,279.05 = 91,632.83 : x
2. Step 2: Convert to fraction form
   159,615.72/220,279.05 = 91,632.83/x
3. Step 3: Cross multiply
   159,615.72x = 220,279.05 × 91,632.83
4. Step 4: Simplify right side
   159,615.72x = 20,184,791,639.82
5. Step 5: Solve for x
   x = 20,184,791,639.82/159,615.72
6. Step 6: Final answer
   x = 126,458.67