Finding the Fourth Proportional to 49,878.56, 68,841.96 and 30,764.72

Step by Step Solution

1. Step 1: Write the proportion equation
   49,878.56 : 68,841.96 = 30,764.72 : x
2. Step 2: Convert to fraction form
   49,878.56/68,841.96 = 30,764.72/x
3. Step 3: Cross multiply
   49,878.56x = 68,841.96 × 30,764.72
4. Step 4: Simplify right side
   49,878.56x = 2,117,903,623.65
5. Step 5: Solve for x
   x = 2,117,903,623.65/49,878.56
6. Step 6: Final answer
   x = 42,461.20