Finding the Fourth Proportional to 147,665.16, 221,104.62 and 77,397.48

Step by Step Solution

1. Step 1: Write the proportion equation
   147,665.16 : 221,104.62 = 77,397.48 : x
2. Step 2: Convert to fraction form
   147,665.16/221,104.62 = 77,397.48/x
3. Step 3: Cross multiply
   147,665.16x = 221,104.62 × 77,397.48
4. Step 4: Simplify right side
   147,665.16x = 17,112,940,404.36
5. Step 5: Solve for x
   x = 17,112,940,404.36/147,665.16
6. Step 6: Final answer
   x = 115,890.17