Finding the Fourth Proportional to 78,736.02, 108,659.12 and 42,928.08

Step by Step Solution

1. Step 1: Write the proportion equation
   78,736.02 : 108,659.12 = 42,928.08 : x
2. Step 2: Convert to fraction form
   78,736.02/108,659.12 = 42,928.08/x
3. Step 3: Cross multiply
   78,736.02x = 108,659.12 × 42,928.08
4. Step 4: Simplify right side
   78,736.02x = 4,664,527,181.45
5. Step 5: Solve for x
   x = 4,664,527,181.45/78,736.02
6. Step 6: Final answer
   x = 59,242.61