Finding the Fourth Proportional to 112,868.30, 169,303.89 and 77,798.54

Step by Step Solution

1. Step 1: Write the proportion equation
   112,868.30 : 169,303.89 = 77,798.54 : x
2. Step 2: Convert to fraction form
   112,868.30/169,303.89 = 77,798.54/x
3. Step 3: Cross multiply
   112,868.30x = 169,303.89 × 77,798.54
4. Step 4: Simplify right side
   112,868.30x = 13,171,595,458.32
5. Step 5: Solve for x
   x = 13,171,595,458.32/112,868.30
6. Step 6: Final answer
   x = 116,698.80