Finding the Fourth Proportional to 147,897.05, 204,139.80 and 87,488.69

Step by Step Solution

1. Step 1: Write the proportion equation
   147,897.05 : 204,139.80 = 87,488.69 : x
2. Step 2: Convert to fraction form
   147,897.05/204,139.80 = 87,488.69/x
3. Step 3: Cross multiply
   147,897.05x = 204,139.80 × 87,488.69
4. Step 4: Simplify right side
   147,897.05x = 17,859,924,189.21
5. Step 5: Solve for x
   x = 17,859,924,189.21/147,897.05
6. Step 6: Final answer
   x = 120,759.16