Finding the Fourth Proportional to 271,930,030.83, 408,015,617.99 and 142,506,870.03

Step by Step Solution

1. Step 1: Write the proportion equation
   271,930,030.83 : 408,015,617.99 = 142,506,870.03 : x
2. Step 2: Convert to fraction form
   271,930,030.83/408,015,617.99 = 142,506,870.03/x
3. Step 3: Cross multiply
   271,930,030.83x = 408,015,617.99 × 142,506,870.03
4. Step 4: Simplify right side
   271,930,030.83x = 58,145,028,642,398,528
5. Step 5: Solve for x
   x = 58,145,028,642,398,528/271,930,030.83
6. Step 6: Final answer
   x = 213,823,491.52