Finding the Fourth Proportional to 151,130.79, 208,560.48 and 83,146.31

Step by Step Solution

1. Step 1: Write the proportion equation
   151,130.79 : 208,560.48 = 83,146.31 : x
2. Step 2: Convert to fraction form
   151,130.79/208,560.48 = 83,146.31/x
3. Step 3: Cross multiply
   151,130.79x = 208,560.48 × 83,146.31
4. Step 4: Simplify right side
   151,130.79x = 17,341,033,488.89
5. Step 5: Solve for x
   x = 17,341,033,488.89/151,130.79
6. Step 6: Final answer
   x = 114,741.89