Finding the Fourth Proportional to 139,401,462.38, 208,913,781.14 and 53,092,786.78

Step by Step Solution

1. Step 1: Write the proportion equation
   139,401,462.38 : 208,913,781.14 = 53,092,786.78 : x
2. Step 2: Convert to fraction form
   139,401,462.38/208,913,781.14 = 53,092,786.78/x
3. Step 3: Cross multiply
   139,401,462.38x = 208,913,781.14 × 53,092,786.78
4. Step 4: Simplify right side
   139,401,462.38x = 11,091,814,837,469,604
5. Step 5: Solve for x
   x = 11,091,814,837,469,604/139,401,462.38
6. Step 6: Final answer
   x = 79,567,420.94