Finding the Fourth Proportional to 70,118.91, 105,178.50 and 30,679.07

Step by Step Solution

1. Step 1: Write the proportion equation
   70,118.91 : 105,178.50 = 30,679.07 : x
2. Step 2: Convert to fraction form
   70,118.91/105,178.50 = 30,679.07/x
3. Step 3: Cross multiply
   70,118.91x = 105,178.50 × 30,679.07
4. Step 4: Simplify right side
   70,118.91x = 3,226,778,038.10
5. Step 5: Solve for x
   x = 3,226,778,038.10/70,118.91
6. Step 6: Final answer
   x = 46,018.66