Finding the Fourth Proportional to 105,105.15, 145,045.35 and 59,782.14

Step by Step Solution

1. Step 1: Write the proportion equation
   105,105.15 : 145,045.35 = 59,782.14 : x
2. Step 2: Convert to fraction form
   105,105.15/145,045.35 = 59,782.14/x
3. Step 3: Cross multiply
   105,105.15x = 145,045.35 × 59,782.14
4. Step 4: Simplify right side
   105,105.15x = 8,671,121,420.05
5. Step 5: Solve for x
   x = 8,671,121,420.05/105,105.15
6. Step 6: Final answer
   x = 82,499.49