Finding the Fourth Proportional to 76,245.33, 105,218.82 and 42,254.39

Step by Step Solution

1. Step 1: Write the proportion equation
   76,245.33 : 105,218.82 = 42,254.39 : x
2. Step 2: Convert to fraction form
   76,245.33/105,218.82 = 42,254.39/x
3. Step 3: Cross multiply
   76,245.33x = 105,218.82 × 42,254.39
4. Step 4: Simplify right side
   76,245.33x = 4,445,956,529.53
5. Step 5: Solve for x
   x = 4,445,956,529.53/76,245.33
6. Step 6: Final answer
   x = 58,311.20