Finding the Fourth Proportional to 81,870.18, 112,971.69 and 46,072.50

Step by Step Solution

1. Step 1: Write the proportion equation
   81,870.18 : 112,971.69 = 46,072.50 : x
2. Step 2: Convert to fraction form
   81,870.18/112,971.69 = 46,072.50/x
3. Step 3: Cross multiply
   81,870.18x = 112,971.69 × 46,072.50
4. Step 4: Simplify right side
   81,870.18x = 5,204,888,187.53
5. Step 5: Solve for x
   x = 5,204,888,187.53/81,870.18
6. Step 6: Final answer
   x = 63,574.90