Finding the Fourth Proportional to 118.42, 177.64 and 100.52

Step by Step Solution

1. Step 1: Write the proportion equation
   118.42 : 177.64 = 100.52 : x
2. Step 2: Convert to fraction form
   118.42/177.64 = 100.52/x
3. Step 3: Cross multiply
   118.42x = 177.64 × 100.52
4. Step 4: Simplify right side
   118.42x = 17,856.37
5. Step 5: Solve for x
   x = 17,856.37/118.42
6. Step 6: Final answer
   x = 150.79