Finding the Fourth Proportional to 151,129.48, 208,558.70 and 83,145

Step by Step Solution

1. Step 1: Write the proportion equation
   151,129.48 : 208,558.70 = 83,145 : x
2. Step 2: Convert to fraction form
   151,129.48/208,558.70 = 83,145/x
3. Step 3: Cross multiply
   151,129.48x = 208,558.70 × 83,145
4. Step 4: Simplify right side
   151,129.48x = 17,340,613,111.50
5. Step 5: Solve for x
   x = 17,340,613,111.50/151,129.48
6. Step 6: Final answer
   x = 114,740.11