Finding the Fourth Proportional to 76,141.16, 105,073.29 and 42,149.69

Step by Step Solution

1. Step 1: Write the proportion equation
   76,141.16 : 105,073.29 = 42,149.69 : x
2. Step 2: Convert to fraction form
   76,141.16/105,073.29 = 42,149.69/x
3. Step 3: Cross multiply
   76,141.16x = 105,073.29 × 42,149.69
4. Step 4: Simplify right side
   76,141.16x = 4,428,806,075.41
5. Step 5: Solve for x
   x = 4,428,806,075.41/76,141.16
6. Step 6: Final answer
   x = 58,165.73