Finding the Fourth Proportional to 72,020.52, 107,978.28 and 34,056.36

Step by Step Solution

1. Step 1: Write the proportion equation
   72,020.52 : 107,978.28 = 34,056.36 : x
2. Step 2: Convert to fraction form
   72,020.52/107,978.28 = 34,056.36/x
3. Step 3: Cross multiply
   72,020.52x = 107,978.28 × 34,056.36
4. Step 4: Simplify right side
   72,020.52x = 3,677,347,175.86
5. Step 5: Solve for x
   x = 3,677,347,175.86/72,020.52
6. Step 6: Final answer
   x = 51,059.71