Finding the Fourth Proportional to 76,603.38, 105,719.04 and 42,618.26

Step by Step Solution

1. Step 1: Write the proportion equation
   76,603.38 : 105,719.04 = 42,618.26 : x
2. Step 2: Convert to fraction form
   76,603.38/105,719.04 = 42,618.26/x
3. Step 3: Cross multiply
   76,603.38x = 105,719.04 × 42,618.26
4. Step 4: Simplify right side
   76,603.38x = 4,505,561,533.67
5. Step 5: Solve for x
   x = 4,505,561,533.67/76,603.38
6. Step 6: Final answer
   x = 58,816.75