Finding the Fourth Proportional to 77,768.10, 116,601.93 and 42,698.34

Step by Step Solution

1. Step 1: Write the proportion equation
   77,768.10 : 116,601.93 = 42,698.34 : x
2. Step 2: Convert to fraction form
   77,768.10/116,601.93 = 42,698.34/x
3. Step 3: Cross multiply
   77,768.10x = 116,601.93 × 42,698.34
4. Step 4: Simplify right side
   77,768.10x = 4,978,708,851.80
5. Step 5: Solve for x
   x = 4,978,708,851.80/77,768.10
6. Step 6: Final answer
   x = 64,019.94