Finding the Fourth Proportional to 139,320,476.28, 192,257,414.73 and 89,762,938.83

Step by Step Solution

1. Step 1: Write the proportion equation
   139,320,476.28 : 192,257,414.73 = 89,762,938.83 : x
2. Step 2: Convert to fraction form
   139,320,476.28/192,257,414.73 = 89,762,938.83/x
3. Step 3: Cross multiply
   139,320,476.28x = 192,257,414.73 × 89,762,938.83
4. Step 4: Simplify right side
   139,320,476.28x = 17,257,590,558,022,930
5. Step 5: Solve for x
   x = 17,257,590,558,022,930/139,320,476.28
6. Step 6: Final answer
   x = 123,869,735.58