Finding the Fourth Proportional to 158,357,822.57, 218,456,137.99 and 137,420,468.72

Step by Step Solution

1. Step 1: Write the proportion equation
   158,357,822.57 : 218,456,137.99 = 137,420,468.72 : x
2. Step 2: Convert to fraction form
   158,357,822.57/218,456,137.99 = 137,420,468.72/x
3. Step 3: Cross multiply
   158,357,822.57x = 218,456,137.99 × 137,420,468.72
4. Step 4: Simplify right side
   158,357,822.57x = 30,020,344,876,659,700
5. Step 5: Solve for x
   x = 30,020,344,876,659,700/158,357,822.57
6. Step 6: Final answer
   x = 189,572,857.15