Finding the Fourth Proportional to 118,388.75, 163,374.41 and 64,672.38

Step by Step Solution

1. Step 1: Write the proportion equation
   118,388.75 : 163,374.41 = 64,672.38 : x
2. Step 2: Convert to fraction form
   118,388.75/163,374.41 = 64,672.38/x
3. Step 3: Cross multiply
   118,388.75x = 163,374.41 × 64,672.38
4. Step 4: Simplify right side
   118,388.75x = 10,565,812,087.48
5. Step 5: Solve for x
   x = 10,565,812,087.48/118,388.75
6. Step 6: Final answer
   x = 89,246.76