Finding the Fourth Proportional to 118,388.49, 163,374.27 and 64,672.46

Step by Step Solution

1. Step 1: Write the proportion equation
   118,388.49 : 163,374.27 = 64,672.46 : x
2. Step 2: Convert to fraction form
   118,388.49/163,374.27 = 64,672.46/x
3. Step 3: Cross multiply
   118,388.49x = 163,374.27 × 64,672.46
4. Step 4: Simplify right side
   118,388.49x = 10,565,815,941.60
5. Step 5: Solve for x
   x = 10,565,815,941.60/118,388.49
6. Step 6: Final answer
   x = 89,246.99