Finding the Fourth Proportional to 158,490,621.30, 221,433,373.50 and 158,490,621.30

Step by Step Solution

1. Step 1: Write the proportion equation
   158,490,621.30 : 221,433,373.50 = 158,490,621.30 : x
2. Step 2: Convert to fraction form
   158,490,621.30/221,433,373.50 = 158,490,621.30/x
3. Step 3: Cross multiply
   158,490,621.30x = 221,433,373.50 × 158,490,621.30
4. Step 4: Simplify right side
   158,490,621.30x = 35,095,112,942,569,960
5. Step 5: Solve for x
   x = 35,095,112,942,569,960/158,490,621.30
6. Step 6: Final answer
   x = 221,433,373.50