Finding the Fourth Proportional to 510,407.56, 765,681.39 and 173,357.72

Step by Step Solution

1. Step 1: Write the proportion equation
   510,407.56 : 765,681.39 = 173,357.72 : x
2. Step 2: Convert to fraction form
   510,407.56/765,681.39 = 173,357.72/x
3. Step 3: Cross multiply
   510,407.56x = 765,681.39 × 173,357.72
4. Step 4: Simplify right side
   510,407.56x = 132,736,779,059.73
5. Step 5: Solve for x
   x = 132,736,779,059.73/510,407.56
6. Step 6: Final answer
   x = 260,060.37