Finding the Fourth Proportional to 76,322.66, 105,315.39 and 42,331.01

Step by Step Solution

1. Step 1: Write the proportion equation
   76,322.66 : 105,315.39 = 42,331.01 : x
2. Step 2: Convert to fraction form
   76,322.66/105,315.39 = 42,331.01/x
3. Step 3: Cross multiply
   76,322.66x = 105,315.39 × 42,331.01
4. Step 4: Simplify right side
   76,322.66x = 4,458,106,300.67
5. Step 5: Solve for x
   x = 4,458,106,300.67/76,322.66
6. Step 6: Final answer
   x = 58,411.31