Finding the Fourth Proportional to 280,271,004.72, 420,406,533 and 83,537,466

Step by Step Solution

1. Step 1: Write the proportion equation
   280,271,004.72 : 420,406,533 = 83,537,466 : x
2. Step 2: Convert to fraction form
   280,271,004.72/420,406,533 = 83,537,466/x
3. Step 3: Cross multiply
   280,271,004.72x = 420,406,533 × 83,537,466
4. Step 4: Simplify right side
   280,271,004.72x = 35,119,696,456,665,376
5. Step 5: Solve for x
   x = 35,119,696,456,665,376/280,271,004.72
6. Step 6: Final answer
   x = 125,306,206.73