Finding the Fourth Proportional to 34,863.98, 52,290.47 and 28,978.67

Step by Step Solution

1. Step 1: Write the proportion equation
   34,863.98 : 52,290.47 = 28,978.67 : x
2. Step 2: Convert to fraction form
   34,863.98/52,290.47 = 28,978.67/x
3. Step 3: Cross multiply
   34,863.98x = 52,290.47 × 28,978.67
4. Step 4: Simplify right side
   34,863.98x = 1,515,308,129.38
5. Step 5: Solve for x
   x = 1,515,308,129.38/34,863.98
6. Step 6: Final answer
   x = 43,463.43