Finding the Fourth Proportional to 135,645.42, 187,152.50 and 106,875.89

Step by Step Solution

1. Step 1: Write the proportion equation
   135,645.42 : 187,152.50 = 106,875.89 : x
2. Step 2: Convert to fraction form
   135,645.42/187,152.50 = 106,875.89/x
3. Step 3: Cross multiply
   135,645.42x = 187,152.50 × 106,875.89
4. Step 4: Simplify right side
   135,645.42x = 20,002,090,003.23
5. Step 5: Solve for x
   x = 20,002,090,003.23/135,645.42
6. Step 6: Final answer
   x = 147,458.65