Finding the Fourth Proportional to 61,256.74, 91,829.63 and 42,545.61

Step by Step Solution

1. Step 1: Write the proportion equation
   61,256.74 : 91,829.63 = 42,545.61 : x
2. Step 2: Convert to fraction form
   61,256.74/91,829.63 = 42,545.61/x
3. Step 3: Cross multiply
   61,256.74x = 91,829.63 × 42,545.61
4. Step 4: Simplify right side
   61,256.74x = 3,906,947,624.42
5. Step 5: Solve for x
   x = 3,906,947,624.42/61,256.74
6. Step 6: Final answer
   x = 63,779.88