Finding the Fourth Proportional to 123,777.77, 170,778.78 and 70,061.63

Step by Step Solution

1. Step 1: Write the proportion equation
   123,777.77 : 170,778.78 = 70,061.63 : x
2. Step 2: Convert to fraction form
   123,777.77/170,778.78 = 70,061.63/x
3. Step 3: Cross multiply
   123,777.77x = 170,778.78 × 70,061.63
4. Step 4: Simplify right side
   123,777.77x = 11,965,038,842.32
5. Step 5: Solve for x
   x = 11,965,038,842.32/123,777.77
6. Step 6: Final answer
   x = 96,665.49