Finding the Fourth Proportional to 258,168,604.50, 356,272,681.50 and 142,275,100.50

Step by Step Solution

1. Step 1: Write the proportion equation
   258,168,604.50 : 356,272,681.50 = 142,275,100.50 : x
2. Step 2: Convert to fraction form
   258,168,604.50/356,272,681.50 = 142,275,100.50/x
3. Step 3: Cross multiply
   258,168,604.50x = 356,272,681.50 × 142,275,100.50
4. Step 4: Simplify right side
   258,168,604.50x = 50,688,731,565,816,992
5. Step 5: Solve for x
   x = 50,688,731,565,816,992/258,168,604.50
6. Step 6: Final answer
   x = 196,339,642.71