Finding the Fourth Proportional to 139,227,405.24, 207,819,126.42 and 128,967,051

Step by Step Solution

1. Step 1: Write the proportion equation
   139,227,405.24 : 207,819,126.42 = 128,967,051 : x
2. Step 2: Convert to fraction form
   139,227,405.24/207,819,126.42 = 128,967,051/x
3. Step 3: Cross multiply
   139,227,405.24x = 207,819,126.42 × 128,967,051
4. Step 4: Simplify right side
   139,227,405.24x = 26,801,819,875,783,584
5. Step 5: Solve for x
   x = 26,801,819,875,783,584/139,227,405.24
6. Step 6: Final answer
   x = 192,503,909.91