Finding the Fourth Proportional to 81,538.88, 112,523.85 and 47,570.72

Step by Step Solution

1. Step 1: Write the proportion equation
   81,538.88 : 112,523.85 = 47,570.72 : x
2. Step 2: Convert to fraction form
   81,538.88/112,523.85 = 47,570.72/x
3. Step 3: Cross multiply
   81,538.88x = 112,523.85 × 47,570.72
4. Step 4: Simplify right side
   81,538.88x = 5,352,840,561.67
5. Step 5: Solve for x
   x = 5,352,840,561.67/81,538.88
6. Step 6: Final answer
   x = 65,647.71