Finding the Fourth Proportional to 139,657,019.82, 192,732,666.75 and 77,777,358.18

Step by Step Solution

1. Step 1: Write the proportion equation
   139,657,019.82 : 192,732,666.75 = 77,777,358.18 : x
2. Step 2: Convert to fraction form
   139,657,019.82/192,732,666.75 = 77,777,358.18/x
3. Step 3: Cross multiply
   139,657,019.82x = 192,732,666.75 × 77,777,358.18
4. Step 4: Simplify right side
   139,657,019.82x = 14,990,237,654,801,328
5. Step 5: Solve for x
   x = 14,990,237,654,801,328/139,657,019.82
6. Step 6: Final answer
   x = 107,336,084.32