Finding the Fourth Proportional to 76,486.52, 105,551.28 and 42,498.13

Step by Step Solution

1. Step 1: Write the proportion equation
   76,486.52 : 105,551.28 = 42,498.13 : x
2. Step 2: Convert to fraction form
   76,486.52/105,551.28 = 42,498.13/x
3. Step 3: Cross multiply
   76,486.52x = 105,551.28 × 42,498.13
4. Step 4: Simplify right side
   76,486.52x = 4,485,732,019.11
5. Step 5: Solve for x
   x = 4,485,732,019.11/76,486.52
6. Step 6: Final answer
   x = 58,647.36