Finding the Fourth Proportional to 76,477.95, 105,538.11 and 42,486.09

Step by Step Solution

1. Step 1: Write the proportion equation
   76,477.95 : 105,538.11 = 42,486.09 : x
2. Step 2: Convert to fraction form
   76,477.95/105,538.11 = 42,486.09/x
3. Step 3: Cross multiply
   76,477.95x = 105,538.11 × 42,486.09
4. Step 4: Simplify right side
   76,477.95x = 4,483,901,639.89
5. Step 5: Solve for x
   x = 4,483,901,639.89/76,477.95
6. Step 6: Final answer
   x = 58,629.99