Finding the Fourth Proportional to 220,081.83, 330,061.77 and 77,908.38

Step by Step Solution

1. Step 1: Write the proportion equation
   220,081.83 : 330,061.77 = 77,908.38 : x
2. Step 2: Convert to fraction form
   220,081.83/330,061.77 = 77,908.38/x
3. Step 3: Cross multiply
   220,081.83x = 330,061.77 × 77,908.38
4. Step 4: Simplify right side
   220,081.83x = 25,714,577,800.63
5. Step 5: Solve for x
   x = 25,714,577,800.63/220,081.83
6. Step 6: Final answer
   x = 116,840.99