Finding the Fourth Proportional to 78,790.83, 108,730.96 and 42,980.52

Step by Step Solution

1. Step 1: Write the proportion equation
   78,790.83 : 108,730.96 = 42,980.52 : x
2. Step 2: Convert to fraction form
   78,790.83/108,730.96 = 42,980.52/x
3. Step 3: Cross multiply
   78,790.83x = 108,730.96 × 42,980.52
4. Step 4: Simplify right side
   78,790.83x = 4,673,313,501.19
5. Step 5: Solve for x
   x = 4,673,313,501.19/78,790.83
6. Step 6: Final answer
   x = 59,312.91