Finding the Fourth Proportional to 118,057.71, 162,918.62 and 64,342.72

Step by Step Solution

1. Step 1: Write the proportion equation
   118,057.71 : 162,918.62 = 64,342.72 : x
2. Step 2: Convert to fraction form
   118,057.71/162,918.62 = 64,342.72/x
3. Step 3: Cross multiply
   118,057.71x = 162,918.62 × 64,342.72
4. Step 4: Simplify right side
   118,057.71x = 10,482,627,272.67
5. Step 5: Solve for x
   x = 10,482,627,272.67/118,057.71
6. Step 6: Final answer
   x = 88,792.40