Finding the Fourth Proportional to 76,316.37, 105,316.89 and 42,328.02

Step by Step Solution

1. Step 1: Write the proportion equation
   76,316.37 : 105,316.89 = 42,328.02 : x
2. Step 2: Convert to fraction form
   76,316.37/105,316.89 = 42,328.02/x
3. Step 3: Cross multiply
   76,316.37x = 105,316.89 × 42,328.02
4. Step 4: Simplify right side
   76,316.37x = 4,457,855,426.26
5. Step 5: Solve for x
   x = 4,457,855,426.26/76,316.37
6. Step 6: Final answer
   x = 58,412.83