Finding the Fourth Proportional to 117,745.32, 162,490.18 and 64,031.18

Step by Step Solution

1. Step 1: Write the proportion equation
   117,745.32 : 162,490.18 = 64,031.18 : x
2. Step 2: Convert to fraction form
   117,745.32/162,490.18 = 64,031.18/x
3. Step 3: Cross multiply
   117,745.32x = 162,490.18 × 64,031.18
4. Step 4: Simplify right side
   117,745.32x = 10,404,437,963.81
5. Step 5: Solve for x
   x = 10,404,437,963.81/117,745.32
6. Step 6: Final answer
   x = 88,363.92