Finding the Fourth Proportional to 118,471.88, 163,495.59 and 64,760.54

Step by Step Solution

1. Step 1: Write the proportion equation
   118,471.88 : 163,495.59 = 64,760.54 : x
2. Step 2: Convert to fraction form
   118,471.88/163,495.59 = 64,760.54/x
3. Step 3: Cross multiply
   118,471.88x = 163,495.59 × 64,760.54
4. Step 4: Simplify right side
   118,471.88x = 10,588,062,696.02
5. Step 5: Solve for x
   x = 10,588,062,696.02/118,471.88
6. Step 6: Final answer
   x = 89,371.95