Finding the Fourth Proportional to 118.86, 177.50 and 117.59

Step by Step Solution

1. Step 1: Write the proportion equation
   118.86 : 177.50 = 117.59 : x
2. Step 2: Convert to fraction form
   118.86/177.50 = 117.59/x
3. Step 3: Cross multiply
   118.86x = 177.50 × 117.59
4. Step 4: Simplify right side
   118.86x = 20,870.75
5. Step 5: Solve for x
   x = 20,870.75/118.86
6. Step 6: Final answer
   x = 175.59