Finding the Fourth Proportional to 77,749.16, 116,623.78 and 42,910.24

Step by Step Solution

1. Step 1: Write the proportion equation
   77,749.16 : 116,623.78 = 42,910.24 : x
2. Step 2: Convert to fraction form
   77,749.16/116,623.78 = 42,910.24/x
3. Step 3: Cross multiply
   77,749.16x = 116,623.78 × 42,910.24
4. Step 4: Simplify right side
   77,749.16x = 5,004,354,389.51
5. Step 5: Solve for x
   x = 5,004,354,389.51/77,749.16
6. Step 6: Final answer
   x = 64,365.38