Finding the Fourth Proportional to 269,636,868.86, 404,097,748.34 and 138,473,846.30

Step by Step Solution

1. Step 1: Write the proportion equation
   269,636,868.86 : 404,097,748.34 = 138,473,846.30 : x
2. Step 2: Convert to fraction form
   269,636,868.86/404,097,748.34 = 138,473,846.30/x
3. Step 3: Cross multiply
   269,636,868.86x = 404,097,748.34 × 138,473,846.30
4. Step 4: Simplify right side
   269,636,868.86x = 55,956,969,493,809,240
5. Step 5: Solve for x
   x = 55,956,969,493,809,240/269,636,868.86
6. Step 6: Final answer
   x = 207,527,144.68