Finding the Fourth Proportional to 76,317.08, 105,316.89 and 42,783.08

Step by Step Solution

1. Step 1: Write the proportion equation
   76,317.08 : 105,316.89 = 42,783.08 : x
2. Step 2: Convert to fraction form
   76,317.08/105,316.89 = 42,783.08/x
3. Step 3: Cross multiply
   76,317.08x = 105,316.89 × 42,783.08
4. Step 4: Simplify right side
   76,317.08x = 4,505,780,930.22
5. Step 5: Solve for x
   x = 4,505,780,930.22/76,317.08
6. Step 6: Final answer
   x = 59,040.27