Finding the Fourth Proportional to 117,431, 162,054.84 and 67,131.08

Step by Step Solution

1. Step 1: Write the proportion equation
   117,431 : 162,054.84 = 67,131.08 : x
2. Step 2: Convert to fraction form
   117,431/162,054.84 = 67,131.08/x
3. Step 3: Cross multiply
   117,431x = 162,054.84 × 67,131.08
4. Step 4: Simplify right side
   117,431x = 10,878,916,428.43
5. Step 5: Solve for x
   x = 10,878,916,428.43/117,431
6. Step 6: Final answer
   x = 92,640.92