Finding the Fourth Proportional to 61,142.58, 91,578.38 and 46,998.45

Step by Step Solution

1. Step 1: Write the proportion equation
   61,142.58 : 91,578.38 = 46,998.45 : x
2. Step 2: Convert to fraction form
   61,142.58/91,578.38 = 46,998.45/x
3. Step 3: Cross multiply
   61,142.58x = 91,578.38 × 46,998.45
4. Step 4: Simplify right side
   61,142.58x = 4,304,041,678.52
5. Step 5: Solve for x
   x = 4,304,041,678.52/61,142.58
6. Step 6: Final answer
   x = 70,393.52