Finding the Fourth Proportional to 118,233.31, 163,162.38 and 64,519.51

Step by Step Solution

1. Step 1: Write the proportion equation
   118,233.31 : 163,162.38 = 64,519.51 : x
2. Step 2: Convert to fraction form
   118,233.31/163,162.38 = 64,519.51/x
3. Step 3: Cross multiply
   118,233.31x = 163,162.38 × 64,519.51
4. Step 4: Simplify right side
   118,233.31x = 10,527,156,808.03
5. Step 5: Solve for x
   x = 10,527,156,808.03/118,233.31
6. Step 6: Final answer
   x = 89,037.15