Finding the Fourth Proportional to 118,830.47, 163,924.72 and 80,577.08

Step by Step Solution

1. Step 1: Write the proportion equation
   118,830.47 : 163,924.72 = 80,577.08 : x
2. Step 2: Convert to fraction form
   118,830.47/163,924.72 = 80,577.08/x
3. Step 3: Cross multiply
   118,830.47x = 163,924.72 × 80,577.08
4. Step 4: Simplify right side
   118,830.47x = 13,208,575,277.42
5. Step 5: Solve for x
   x = 13,208,575,277.42/118,830.47
6. Step 6: Final answer
   x = 111,154.78