Finding the Fourth Proportional to 77,968.58, 107,596.71 and 42,158.62

Step by Step Solution

1. Step 1: Write the proportion equation
   77,968.58 : 107,596.71 = 42,158.62 : x
2. Step 2: Convert to fraction form
   77,968.58/107,596.71 = 42,158.62/x
3. Step 3: Cross multiply
   77,968.58x = 107,596.71 × 42,158.62
4. Step 4: Simplify right side
   77,968.58x = 4,536,128,061.36
5. Step 5: Solve for x
   x = 4,536,128,061.36/77,968.58
6. Step 6: Final answer
   x = 58,178.92