Finding the Fourth Proportional to 81,775.06, 122,710.17 and 34,386.72

Step by Step Solution

1. Step 1: Write the proportion equation
   81,775.06 : 122,710.17 = 34,386.72 : x
2. Step 2: Convert to fraction form
   81,775.06/122,710.17 = 34,386.72/x
3. Step 3: Cross multiply
   81,775.06x = 122,710.17 × 34,386.72
4. Step 4: Simplify right side
   81,775.06x = 4,219,600,256.94
5. Step 5: Solve for x
   x = 4,219,600,256.94/81,775.06
6. Step 6: Final answer
   x = 51,600.09