Finding the Fourth Proportional to 197,498.40, 272,471.69 and 137,038.79

Step by Step Solution

1. Step 1: Write the proportion equation
   197,498.40 : 272,471.69 = 137,038.79 : x
2. Step 2: Convert to fraction form
   197,498.40/272,471.69 = 137,038.79/x
3. Step 3: Cross multiply
   197,498.40x = 272,471.69 × 137,038.79
4. Step 4: Simplify right side
   197,498.40x = 37,339,188,659.30
5. Step 5: Solve for x
   x = 37,339,188,659.30/197,498.40
6. Step 6: Final answer
   x = 189,060.71