Finding the Fourth Proportional to 79,056.02, 118,326.22 and 42,978.20

Step by Step Solution

1. Step 1: Write the proportion equation
   79,056.02 : 118,326.22 = 42,978.20 : x
2. Step 2: Convert to fraction form
   79,056.02/118,326.22 = 42,978.20/x
3. Step 3: Cross multiply
   79,056.02x = 118,326.22 × 42,978.20
4. Step 4: Simplify right side
   79,056.02x = 5,085,447,948.40
5. Step 5: Solve for x
   x = 5,085,447,948.40/79,056.02
6. Step 6: Final answer
   x = 64,327.14