Finding the Fourth Proportional to 78,938.78, 108,934.24 and 43,128.02

Step by Step Solution

1. Step 1: Write the proportion equation
   78,938.78 : 108,934.24 = 43,128.02 : x
2. Step 2: Convert to fraction form
   78,938.78/108,934.24 = 43,128.02/x
3. Step 3: Cross multiply
   78,938.78x = 108,934.24 × 43,128.02
4. Step 4: Simplify right side
   78,938.78x = 4,698,118,141.71
5. Step 5: Solve for x
   x = 4,698,118,141.71/78,938.78
6. Step 6: Final answer
   x = 59,515.97