Finding the Fourth Proportional to 123,263.44, 170,099.56 and 77,966.16

Step by Step Solution

1. Step 1: Write the proportion equation
   123,263.44 : 170,099.56 = 77,966.16 : x
2. Step 2: Convert to fraction form
   123,263.44/170,099.56 = 77,966.16/x
3. Step 3: Cross multiply
   123,263.44x = 170,099.56 × 77,966.16
4. Step 4: Simplify right side
   123,263.44x = 13,262,009,510.89
5. Step 5: Solve for x
   x = 13,262,009,510.89/123,263.44
6. Step 6: Final answer
   x = 107,590.78