Finding the Fourth Proportional to 79,156.83, 109,236.60 and 42,858.66

Step by Step Solution

1. Step 1: Write the proportion equation
   79,156.83 : 109,236.60 = 42,858.66 : x
2. Step 2: Convert to fraction form
   79,156.83/109,236.60 = 42,858.66/x
3. Step 3: Cross multiply
   79,156.83x = 109,236.60 × 42,858.66
4. Step 4: Simplify right side
   79,156.83x = 4,681,734,298.96
5. Step 5: Solve for x
   x = 4,681,734,298.96/79,156.83
6. Step 6: Final answer
   x = 59,145.05