Finding the Fourth Proportional to 28,083,439,034.28, 42,139,641,429.18 and 13,162,120,504.02

Step by Step Solution

1. Step 1: Write the proportion equation
   28,083,439,034.28 : 42,139,641,429.18 = 13,162,120,504.02 : x
2. Step 2: Convert to fraction form
   28,083,439,034.28/42,139,641,429.18 = 13,162,120,504.02/x
3. Step 3: Cross multiply
   28,083,439,034.28x = 42,139,641,429.18 × 13,162,120,504.02
4. Step 4: Simplify right side
   28,083,439,034.28x = 554,647,038,487,060,742,144
5. Step 5: Solve for x
   x = 554,647,038,487,060,742,144/28,083,439,034.28
6. Step 6: Final answer
   x = 19,749,968,577.92