Finding the Fourth Proportional to 147,538.82, 203,597.55 and 87,128.89

Step by Step Solution

1. Step 1: Write the proportion equation
   147,538.82 : 203,597.55 = 87,128.89 : x
2. Step 2: Convert to fraction form
   147,538.82/203,597.55 = 87,128.89/x
3. Step 3: Cross multiply
   147,538.82x = 203,597.55 × 87,128.89
4. Step 4: Simplify right side
   147,538.82x = 17,739,228,029.23
5. Step 5: Solve for x
   x = 17,739,228,029.23/147,538.82
6. Step 6: Final answer
   x = 120,234.31