Finding the Fourth Proportional to 118,778.68, 163,907.58 and 65,053

Step by Step Solution

1. Step 1: Write the proportion equation
   118,778.68 : 163,907.58 = 65,053 : x
2. Step 2: Convert to fraction form
   118,778.68/163,907.58 = 65,053/x
3. Step 3: Cross multiply
   118,778.68x = 163,907.58 × 65,053
4. Step 4: Simplify right side
   118,778.68x = 10,662,679,801.74
5. Step 5: Solve for x
   x = 10,662,679,801.74/118,778.68
6. Step 6: Final answer
   x = 89,769.31