Finding the Fourth Proportional to 117,400.12, 162,081.98 and 77,185.24

Step by Step Solution

1. Step 1: Write the proportion equation
   117,400.12 : 162,081.98 = 77,185.24 : x
2. Step 2: Convert to fraction form
   117,400.12/162,081.98 = 77,185.24/x
3. Step 3: Cross multiply
   117,400.12x = 162,081.98 × 77,185.24
4. Step 4: Simplify right side
   117,400.12x = 12,510,336,525.98
5. Step 5: Solve for x
   x = 12,510,336,525.98/117,400.12
6. Step 6: Final answer
   x = 106,561.53