Finding the Fourth Proportional to 61,233.72, 91,858.50 and 42,223.02

Step by Step Solution

1. Step 1: Write the proportion equation
   61,233.72 : 91,858.50 = 42,223.02 : x
2. Step 2: Convert to fraction form
   61,233.72/91,858.50 = 42,223.02/x
3. Step 3: Cross multiply
   61,233.72x = 91,858.50 × 42,223.02
4. Step 4: Simplify right side
   61,233.72x = 3,878,543,282.67
5. Step 5: Solve for x
   x = 3,878,543,282.67/61,233.72
6. Step 6: Final answer
   x = 63,339.99