Finding the Fourth Proportional to 118,180.69, 163,089.09 and 64,465.71

Step by Step Solution

1. Step 1: Write the proportion equation
   118,180.69 : 163,089.09 = 64,465.71 : x
2. Step 2: Convert to fraction form
   118,180.69/163,089.09 = 64,465.71/x
3. Step 3: Cross multiply
   118,180.69x = 163,089.09 × 64,465.71
4. Step 4: Simplify right side
   118,180.69x = 10,513,653,980.10
5. Step 5: Solve for x
   x = 10,513,653,980.10/118,180.69
6. Step 6: Final answer
   x = 88,962.54