Finding the Fourth Proportional to 81,455.10, 112,501.35 and 64,892.22

Step by Step Solution

1. Step 1: Write the proportion equation
   81,455.10 : 112,501.35 = 64,892.22 : x
2. Step 2: Convert to fraction form
   81,455.10/112,501.35 = 64,892.22/x
3. Step 3: Cross multiply
   81,455.10x = 112,501.35 × 64,892.22
4. Step 4: Simplify right side
   81,455.10x = 7,300,462,354.50
5. Step 5: Solve for x
   x = 7,300,462,354.50/81,455.10
6. Step 6: Final answer
   x = 89,625.60