Finding the Fourth Proportional to 81,178.72, 112,026.26 and 45,368.72

Step by Step Solution

1. Step 1: Write the proportion equation
   81,178.72 : 112,026.26 = 45,368.72 : x
2. Step 2: Convert to fraction form
   81,178.72/112,026.26 = 45,368.72/x
3. Step 3: Cross multiply
   81,178.72x = 112,026.26 × 45,368.72
4. Step 4: Simplify right side
   81,178.72x = 5,082,488,022.59
5. Step 5: Solve for x
   x = 5,082,488,022.59/81,178.72
6. Step 6: Final answer
   x = 62,608.62