Finding the Fourth Proportional to 52,790.18, 72,847.86 and 28,916.96

Step by Step Solution

1. Step 1: Write the proportion equation
   52,790.18 : 72,847.86 = 28,916.96 : x
2. Step 2: Convert to fraction form
   52,790.18/72,847.86 = 28,916.96/x
3. Step 3: Cross multiply
   52,790.18x = 72,847.86 × 28,916.96
4. Step 4: Simplify right side
   52,790.18x = 2,106,538,653.71
5. Step 5: Solve for x
   x = 2,106,538,653.71/52,790.18
6. Step 6: Final answer
   x = 39,903.99