Finding the Fourth Proportional to 151,845.30, 209,543.31 and 83,858.31

Step by Step Solution

1. Step 1: Write the proportion equation
   151,845.30 : 209,543.31 = 83,858.31 : x
2. Step 2: Convert to fraction form
   151,845.30/209,543.31 = 83,858.31/x
3. Step 3: Cross multiply
   151,845.30x = 209,543.31 × 83,858.31
4. Step 4: Simplify right side
   151,845.30x = 17,571,947,848.41
5. Step 5: Solve for x
   x = 17,571,947,848.41/151,845.30
6. Step 6: Final answer
   x = 115,722.70