Finding the Fourth Proportional to 76,443.15, 105,488.01 and 42,453.81

Step by Step Solution

1. Step 1: Write the proportion equation
   76,443.15 : 105,488.01 = 42,453.81 : x
2. Step 2: Convert to fraction form
   76,443.15/105,488.01 = 42,453.81/x
3. Step 3: Cross multiply
   76,443.15x = 105,488.01 × 42,453.81
4. Step 4: Simplify right side
   76,443.15x = 4,478,367,933.82
5. Step 5: Solve for x
   x = 4,478,367,933.82/76,443.15
6. Step 6: Final answer
   x = 58,584.29