Finding the Fourth Proportional to 118,363.75, 163,341.97 and 64,648.89

Step by Step Solution

1. Step 1: Write the proportion equation
   118,363.75 : 163,341.97 = 64,648.89 : x
2. Step 2: Convert to fraction form
   118,363.75/163,341.97 = 64,648.89/x
3. Step 3: Cross multiply
   118,363.75x = 163,341.97 × 64,648.89
4. Step 4: Simplify right side
   118,363.75x = 10,559,877,050.91
5. Step 5: Solve for x
   x = 10,559,877,050.91/118,363.75
6. Step 6: Final answer
   x = 89,215.47