Finding the Fourth Proportional to 151,456,938.69, 208,974,977.16 and 91,916,915.12

Step by Step Solution

1. Step 1: Write the proportion equation
   151,456,938.69 : 208,974,977.16 = 91,916,915.12 : x
2. Step 2: Convert to fraction form
   151,456,938.69/208,974,977.16 = 91,916,915.12/x
3. Step 3: Cross multiply
   151,456,938.69x = 208,974,977.16 × 91,916,915.12
4. Step 4: Simplify right side
   151,456,938.69x = 19,208,335,237,213,752
5. Step 5: Solve for x
   x = 19,208,335,237,213,752/151,456,938.69
6. Step 6: Final answer
   x = 126,823,738.83