Finding the Fourth Proportional to 61,234.72, 91,860 and 42,224.02

Step by Step Solution

1. Step 1: Write the proportion equation
   61,234.72 : 91,860 = 42,224.02 : x
2. Step 2: Convert to fraction form
   61,234.72/91,860 = 42,224.02/x
3. Step 3: Cross multiply
   61,234.72x = 91,860 × 42,224.02
4. Step 4: Simplify right side
   61,234.72x = 3,878,698,477.20
5. Step 5: Solve for x
   x = 3,878,698,477.20/61,234.72
6. Step 6: Final answer
   x = 63,341.49