Finding the Fourth Proportional to 77,683.64, 107,142.69 and 50,468.50

Step by Step Solution

1. Step 1: Write the proportion equation
   77,683.64 : 107,142.69 = 50,468.50 : x
2. Step 2: Convert to fraction form
   77,683.64/107,142.69 = 50,468.50/x
3. Step 3: Cross multiply
   77,683.64x = 107,142.69 × 50,468.50
4. Step 4: Simplify right side
   77,683.64x = 5,407,330,314.55
5. Step 5: Solve for x
   x = 5,407,330,314.55/77,683.64
6. Step 6: Final answer
   x = 69,607.07