Finding the Fourth Proportional to 81,992.52, 113,181.42 and 64,093.32

Step by Step Solution

1. Step 1: Write the proportion equation
   81,992.52 : 113,181.42 = 64,093.32 : x
2. Step 2: Convert to fraction form
   81,992.52/113,181.42 = 64,093.32/x
3. Step 3: Cross multiply
   81,992.52x = 113,181.42 × 64,093.32
4. Step 4: Simplify right side
   81,992.52x = 7,254,172,970.11
5. Step 5: Solve for x
   x = 7,254,172,970.11/81,992.52
6. Step 6: Final answer
   x = 88,473.59