Finding the Fourth Proportional to 77,964.96, 107,591.16 and 42,155.04

Step by Step Solution

1. Step 1: Write the proportion equation
   77,964.96 : 107,591.16 = 42,155.04 : x
2. Step 2: Convert to fraction form
   77,964.96/107,591.16 = 42,155.04/x
3. Step 3: Cross multiply
   77,964.96x = 107,591.16 × 42,155.04
4. Step 4: Simplify right side
   77,964.96x = 4,535,509,653.45
5. Step 5: Solve for x
   x = 4,535,509,653.45/77,964.96
6. Step 6: Final answer
   x = 58,173.69