Finding the Fourth Proportional to 118,315.32, 163,273.91 and 64,600.17

Step by Step Solution

1. Step 1: Write the proportion equation
   118,315.32 : 163,273.91 = 64,600.17 : x
2. Step 2: Convert to fraction form
   118,315.32/163,273.91 = 64,600.17/x
3. Step 3: Cross multiply
   118,315.32x = 163,273.91 × 64,600.17
4. Step 4: Simplify right side
   118,315.32x = 10,547,522,019.56
5. Step 5: Solve for x
   x = 10,547,522,019.56/118,315.32
6. Step 6: Final answer
   x = 89,147.56