Finding the Fourth Proportional to 151,772, 209,430.39 and 83,784.56

Step by Step Solution

1. Step 1: Write the proportion equation
   151,772 : 209,430.39 = 83,784.56 : x
2. Step 2: Convert to fraction form
   151,772/209,430.39 = 83,784.56/x
3. Step 3: Cross multiply
   151,772x = 209,430.39 × 83,784.56
4. Step 4: Simplify right side
   151,772x = 17,547,033,076.78
5. Step 5: Solve for x
   x = 17,547,033,076.78/151,772
6. Step 6: Final answer
   x = 115,614.43