Finding the Fourth Proportional to 149,969,604.83, 206,874,690.59 and 87,238,644.53

Step by Step Solution

1. Step 1: Write the proportion equation
   149,969,604.83 : 206,874,690.59 = 87,238,644.53 : x
2. Step 2: Convert to fraction form
   149,969,604.83/206,874,690.59 = 87,238,644.53/x
3. Step 3: Cross multiply
   149,969,604.83x = 206,874,690.59 × 87,238,644.53
4. Step 4: Simplify right side
   149,969,604.83x = 18,047,467,593,164,180
5. Step 5: Solve for x
   x = 18,047,467,593,164,180/149,969,604.83
6. Step 6: Final answer
   x = 120,340,835.83