Finding the Fourth Proportional to 81,196.16, 112,068.78 and 49,358.32

Step by Step Solution

1. Step 1: Write the proportion equation
   81,196.16 : 112,068.78 = 49,358.32 : x
2. Step 2: Convert to fraction form
   81,196.16/112,068.78 = 49,358.32/x
3. Step 3: Cross multiply
   81,196.16x = 112,068.78 × 49,358.32
4. Step 4: Simplify right side
   81,196.16x = 5,531,526,705.25
5. Step 5: Solve for x
   x = 5,531,526,705.25/81,196.16
6. Step 6: Final answer
   x = 68,125.47