Finding the Fourth Proportional to 300,686.25, 451,056.02 and 79,070.25

Step by Step Solution

1. Step 1: Write the proportion equation
   300,686.25 : 451,056.02 = 79,070.25 : x
2. Step 2: Convert to fraction form
   300,686.25/451,056.02 = 79,070.25/x
3. Step 3: Cross multiply
   300,686.25x = 451,056.02 × 79,070.25
4. Step 4: Simplify right side
   300,686.25x = 35,665,111,870.05
5. Step 5: Solve for x
   x = 35,665,111,870.05/300,686.25
6. Step 6: Final answer
   x = 118,612.38