Finding the Fourth Proportional to 151,313.59, 208,804.76 and 86,779.50

Step by Step Solution

1. Step 1: Write the proportion equation
   151,313.59 : 208,804.76 = 86,779.50 : x
2. Step 2: Convert to fraction form
   151,313.59/208,804.76 = 86,779.50/x
3. Step 3: Cross multiply
   151,313.59x = 208,804.76 × 86,779.50
4. Step 4: Simplify right side
   151,313.59x = 18,119,972,059.23
5. Step 5: Solve for x
   x = 18,119,972,059.23/151,313.59
6. Step 6: Final answer
   x = 119,751.12