Finding the Fourth Proportional to 93,384.56, 128,870.42 and 50,942.78

Step by Step Solution

1. Step 1: Write the proportion equation
   93,384.56 : 128,870.42 = 50,942.78 : x
2. Step 2: Convert to fraction form
   93,384.56/128,870.42 = 50,942.78/x
3. Step 3: Cross multiply
   93,384.56x = 128,870.42 × 50,942.78
4. Step 4: Simplify right side
   93,384.56x = 6,565,017,199.85
5. Step 5: Solve for x
   x = 6,565,017,199.85/93,384.56
6. Step 6: Final answer
   x = 70,300.89