Finding the Fourth Proportional to 75,111.16, 103,664.78 and 42,845.62

Step by Step Solution

1. Step 1: Write the proportion equation
   75,111.16 : 103,664.78 = 42,845.62 : x
2. Step 2: Convert to fraction form
   75,111.16/103,664.78 = 42,845.62/x
3. Step 3: Cross multiply
   75,111.16x = 103,664.78 × 42,845.62
4. Step 4: Simplify right side
   75,111.16x = 4,441,581,771.26
5. Step 5: Solve for x
   x = 4,441,581,771.26/75,111.16
6. Step 6: Final answer
   x = 59,133.45