Finding the Fourth Proportional to 86,498.58, 119,322.72 and 75,142.59

Step by Step Solution

1. Step 1: Write the proportion equation
   86,498.58 : 119,322.72 = 75,142.59 : x
2. Step 2: Convert to fraction form
   86,498.58/119,322.72 = 75,142.59/x
3. Step 3: Cross multiply
   86,498.58x = 119,322.72 × 75,142.59
4. Step 4: Simplify right side
   86,498.58x = 8,966,217,779.18
5. Step 5: Solve for x
   x = 8,966,217,779.18/86,498.58
6. Step 6: Final answer
   x = 103,657.39