Finding the Fourth Proportional to 260,498.49, 390,743.47 and 83,003.10

Step by Step Solution

1. Step 1: Write the proportion equation
   260,498.49 : 390,743.47 = 83,003.10 : x
2. Step 2: Convert to fraction form
   260,498.49/390,743.47 = 83,003.10/x
3. Step 3: Cross multiply
   260,498.49x = 390,743.47 × 83,003.10
4. Step 4: Simplify right side
   260,498.49x = 32,432,919,314.76
5. Step 5: Solve for x
   x = 32,432,919,314.76/260,498.49
6. Step 6: Final answer
   x = 124,503.29