Finding the Fourth Proportional to 118,166.78, 163,070.06 and 64,451.63

Step by Step Solution

1. Step 1: Write the proportion equation
   118,166.78 : 163,070.06 = 64,451.63 : x
2. Step 2: Convert to fraction form
   118,166.78/163,070.06 = 64,451.63/x
3. Step 3: Cross multiply
   118,166.78x = 163,070.06 × 64,451.63
4. Step 4: Simplify right side
   118,166.78x = 10,510,130,033.59
5. Step 5: Solve for x
   x = 10,510,130,033.59/118,166.78
6. Step 6: Final answer
   x = 88,943.19