Finding the Fourth Proportional to 139,401,488.70, 209,074,676.82 and 132,488,294.22

Step by Step Solution

1. Step 1: Write the proportion equation
   139,401,488.70 : 209,074,676.82 = 132,488,294.22 : x
2. Step 2: Convert to fraction form
   139,401,488.70/209,074,676.82 = 132,488,294.22/x
3. Step 3: Cross multiply
   139,401,488.70x = 209,074,676.82 × 132,488,294.22
4. Step 4: Simplify right side
   139,401,488.70x = 27,699,947,296,479,572
5. Step 5: Solve for x
   x = 27,699,947,296,479,572/139,401,488.70
6. Step 6: Final answer
   x = 198,706,251.67