Finding the Fourth Proportional to 151,762.50, 209,435.60 and 83,779.31

Step by Step Solution

1. Step 1: Write the proportion equation
   151,762.50 : 209,435.60 = 83,779.31 : x
2. Step 2: Convert to fraction form
   151,762.50/209,435.60 = 83,779.31/x
3. Step 3: Cross multiply
   151,762.50x = 209,435.60 × 83,779.31
4. Step 4: Simplify right side
   151,762.50x = 17,546,370,790.47
5. Step 5: Solve for x
   x = 17,546,370,790.47/151,762.50
6. Step 6: Final answer
   x = 115,617.30