Finding the Fourth Proportional to 75,111.40, 103,665.12 and 42,845.86

Step by Step Solution

1. Step 1: Write the proportion equation
   75,111.40 : 103,665.12 = 42,845.86 : x
2. Step 2: Convert to fraction form
   75,111.40/103,665.12 = 42,845.86/x
3. Step 3: Cross multiply
   75,111.40x = 103,665.12 × 42,845.86
4. Step 4: Simplify right side
   75,111.40x = 4,441,621,218.40
5. Step 5: Solve for x
   x = 4,441,621,218.40/75,111.40
6. Step 6: Final answer
   x = 59,133.78