Finding the Fourth Proportional to 78,564.84, 108,419.28 and 42,754.84

Step by Step Solution

1. Step 1: Write the proportion equation
   78,564.84 : 108,419.28 = 42,754.84 : x
2. Step 2: Convert to fraction form
   78,564.84/108,419.28 = 42,754.84/x
3. Step 3: Cross multiply
   78,564.84x = 108,419.28 × 42,754.84
4. Step 4: Simplify right side
   78,564.84x = 4,635,448,969.32
5. Step 5: Solve for x
   x = 4,635,448,969.32/78,564.84
6. Step 6: Final answer
   x = 59,001.57