Finding the Fourth Proportional to 76,804.67, 105,987.06 and 42,816.89

Step by Step Solution

1. Step 1: Write the proportion equation
   76,804.67 : 105,987.06 = 42,816.89 : x
2. Step 2: Convert to fraction form
   76,804.67/105,987.06 = 42,816.89/x
3. Step 3: Cross multiply
   76,804.67x = 105,987.06 × 42,816.89
4. Step 4: Simplify right side
   76,804.67x = 4,538,035,759.51
5. Step 5: Solve for x
   x = 4,538,035,759.51/76,804.67
6. Step 6: Final answer
   x = 59,085.42