Finding the Fourth Proportional to 90,196.58, 124,462.78 and 61,065.68

Step by Step Solution

1. Step 1: Write the proportion equation
   90,196.58 : 124,462.78 = 61,065.68 : x
2. Step 2: Convert to fraction form
   90,196.58/124,462.78 = 61,065.68/x
3. Step 3: Cross multiply
   90,196.58x = 124,462.78 × 61,065.68
4. Step 4: Simplify right side
   90,196.58x = 7,600,404,295.39
5. Step 5: Solve for x
   x = 7,600,404,295.39/90,196.58
6. Step 6: Final answer
   x = 84,264.88