Finding the Fourth Proportional to 151,435.73, 208,981.61 and 91,007.30

Step by Step Solution

1. Step 1: Write the proportion equation
   151,435.73 : 208,981.61 = 91,007.30 : x
2. Step 2: Convert to fraction form
   151,435.73/208,981.61 = 91,007.30/x
3. Step 3: Cross multiply
   151,435.73x = 208,981.61 × 91,007.30
4. Step 4: Simplify right side
   151,435.73x = 19,018,852,075.75
5. Step 5: Solve for x
   x = 19,018,852,075.75/151,435.73
6. Step 6: Final answer
   x = 125,590.26