Finding the Fourth Proportional to 48,915.48, 67,477.62 and 30,978.84

Step by Step Solution

1. Step 1: Write the proportion equation
   48,915.48 : 67,477.62 = 30,978.84 : x
2. Step 2: Convert to fraction form
   48,915.48/67,477.62 = 30,978.84/x
3. Step 3: Cross multiply
   48,915.48x = 67,477.62 × 30,978.84
4. Step 4: Simplify right side
   48,915.48x = 2,090,378,393.56
5. Step 5: Solve for x
   x = 2,090,378,393.56/48,915.48
6. Step 6: Final answer
   x = 42,734.50