Finding the Fourth Proportional to 80,575.63, 111,158.60 and 53,691.91

Step by Step Solution

1. Step 1: Write the proportion equation
   80,575.63 : 111,158.60 = 53,691.91 : x
2. Step 2: Convert to fraction form
   80,575.63/111,158.60 = 53,691.91/x
3. Step 3: Cross multiply
   80,575.63x = 111,158.60 × 53,691.91
4. Step 4: Simplify right side
   80,575.63x = 5,968,317,278.47
5. Step 5: Solve for x
   x = 5,968,317,278.47/80,575.63
6. Step 6: Final answer
   x = 74,071.00