Finding the Fourth Proportional to 52,852.69, 72,937.29 and 28,978.84

Step by Step Solution

1. Step 1: Write the proportion equation
   52,852.69 : 72,937.29 = 28,978.84 : x
2. Step 2: Convert to fraction form
   52,852.69/72,937.29 = 28,978.84/x
3. Step 3: Cross multiply
   52,852.69x = 72,937.29 × 28,978.84
4. Step 4: Simplify right side
   52,852.69x = 2,113,638,056.94
5. Step 5: Solve for x
   x = 2,113,638,056.94/52,852.69
6. Step 6: Final answer
   x = 39,991.12