Finding the Fourth Proportional to 78,561.27, 108,412.38 and 42,750.45

Step by Step Solution

1. Step 1: Write the proportion equation
   78,561.27 : 108,412.38 = 42,750.45 : x
2. Step 2: Convert to fraction form
   78,561.27/108,412.38 = 42,750.45/x
3. Step 3: Cross multiply
   78,561.27x = 108,412.38 × 42,750.45
4. Step 4: Simplify right side
   78,561.27x = 4,634,678,030.57
5. Step 5: Solve for x
   x = 4,634,678,030.57/78,561.27
6. Step 6: Final answer
   x = 58,994.44