Finding the Fourth Proportional to 151,809.12, 209,495.52 and 83,830.32

Step by Step Solution

1. Step 1: Write the proportion equation
   151,809.12 : 209,495.52 = 83,830.32 : x
2. Step 2: Convert to fraction form
   151,809.12/209,495.52 = 83,830.32/x
3. Step 3: Cross multiply
   151,809.12x = 209,495.52 × 83,830.32
4. Step 4: Simplify right side
   151,809.12x = 17,562,076,480.17
5. Step 5: Solve for x
   x = 17,562,076,480.17/151,809.12
6. Step 6: Final answer
   x = 115,685.25