Finding the Fourth Proportional to 76,322.25, 105,334.43 and 42,788.25

Step by Step Solution

1. Step 1: Write the proportion equation
   76,322.25 : 105,334.43 = 42,788.25 : x
2. Step 2: Convert to fraction form
   76,322.25/105,334.43 = 42,788.25/x
3. Step 3: Cross multiply
   76,322.25x = 105,334.43 × 42,788.25
4. Step 4: Simplify right side
   76,322.25x = 4,507,075,710.51
5. Step 5: Solve for x
   x = 4,507,075,710.51/76,322.25
6. Step 6: Final answer
   x = 59,053.23