Finding the Fourth Proportional to 80,558.21, 111,201.32 and 53,690.91

Step by Step Solution

1. Step 1: Write the proportion equation
   80,558.21 : 111,201.32 = 53,690.91 : x
2. Step 2: Convert to fraction form
   80,558.21/111,201.32 = 53,690.91/x
3. Step 3: Cross multiply
   80,558.21x = 111,201.32 × 53,690.91
4. Step 4: Simplify right side
   80,558.21x = 5,970,499,795.55
5. Step 5: Solve for x
   x = 5,970,499,795.55/80,558.21
6. Step 6: Final answer
   x = 74,114.11