Finding the Fourth Proportional to 118,602.54, 163,672.72 and 64,886.38

Step by Step Solution

1. Step 1: Write the proportion equation
   118,602.54 : 163,672.72 = 64,886.38 : x
2. Step 2: Convert to fraction form
   118,602.54/163,672.72 = 64,886.38/x
3. Step 3: Cross multiply
   118,602.54x = 163,672.72 × 64,886.38
4. Step 4: Simplify right side
   118,602.54x = 10,620,130,305.55
5. Step 5: Solve for x
   x = 10,620,130,305.55/118,602.54
6. Step 6: Final answer
   x = 89,543.87