Finding the Fourth Proportional to 61,272.78, 91,743.93 and 42,513.18

Step by Step Solution

1. Step 1: Write the proportion equation
   61,272.78 : 91,743.93 = 42,513.18 : x
2. Step 2: Convert to fraction form
   61,272.78/91,743.93 = 42,513.18/x
3. Step 3: Cross multiply
   61,272.78x = 91,743.93 × 42,513.18
4. Step 4: Simplify right side
   61,272.78x = 3,900,326,210.00
5. Step 5: Solve for x
   x = 3,900,326,210.00/61,272.78
6. Step 6: Final answer
   x = 63,655.12