Finding the Fourth Proportional to 77,963.55, 116,746.06 and 42,864.63

Step by Step Solution

1. Step 1: Write the proportion equation
   77,963.55 : 116,746.06 = 42,864.63 : x
2. Step 2: Convert to fraction form
   77,963.55/116,746.06 = 42,864.63/x
3. Step 3: Cross multiply
   77,963.55x = 116,746.06 × 42,864.63
4. Step 4: Simplify right side
   77,963.55x = 5,004,276,665.86
5. Step 5: Solve for x
   x = 5,004,276,665.86/77,963.55
6. Step 6: Final answer
   x = 64,187.39