Finding the Fourth Proportional to 78,830.46, 108,785.76 and 43,020.78

Step by Step Solution

1. Step 1: Write the proportion equation
   78,830.46 : 108,785.76 = 43,020.78 : x
2. Step 2: Convert to fraction form
   78,830.46/108,785.76 = 43,020.78/x
3. Step 3: Cross multiply
   78,830.46x = 108,785.76 × 43,020.78
4. Step 4: Simplify right side
   78,830.46x = 4,680,048,248.09
5. Step 5: Solve for x
   x = 4,680,048,248.09/78,830.46
6. Step 6: Final answer
   x = 59,368.53