Finding the Fourth Proportional to 196,921.76, 271,748.24 and 107,498.40

Step by Step Solution

1. Step 1: Write the proportion equation
   196,921.76 : 271,748.24 = 107,498.40 : x
2. Step 2: Convert to fraction form
   196,921.76/271,748.24 = 107,498.40/x
3. Step 3: Cross multiply
   196,921.76x = 271,748.24 × 107,498.40
4. Step 4: Simplify right side
   196,921.76x = 29,212,501,002.82
5. Step 5: Solve for x
   x = 29,212,501,002.82/196,921.76
6. Step 6: Final answer
   x = 148,345.72