Finding the Fourth Proportional to 118,058.71, 162,920 and 64,343.72

Step by Step Solution

1. Step 1: Write the proportion equation
   118,058.71 : 162,920 = 64,343.72 : x
2. Step 2: Convert to fraction form
   118,058.71/162,920 = 64,343.72/x
3. Step 3: Cross multiply
   118,058.71x = 162,920 × 64,343.72
4. Step 4: Simplify right side
   118,058.71x = 10,482,878,862.40
5. Step 5: Solve for x
   x = 10,482,878,862.40/118,058.71
6. Step 6: Final answer
   x = 88,793.78