Finding the Fourth Proportional to 117,333.82, 161,878.22 and 77,069.40

Step by Step Solution

1. Step 1: Write the proportion equation
   117,333.82 : 161,878.22 = 77,069.40 : x
2. Step 2: Convert to fraction form
   117,333.82/161,878.22 = 77,069.40/x
3. Step 3: Cross multiply
   117,333.82x = 161,878.22 × 77,069.40
4. Step 4: Simplify right side
   117,333.82x = 12,475,857,288.47
5. Step 5: Solve for x
   x = 12,475,857,288.47/117,333.82
6. Step 6: Final answer
   x = 106,327.89