Finding the Fourth Proportional to 81,511.32, 112,479.99 and 45,209.34

Step by Step Solution

1. Step 1: Write the proportion equation
   81,511.32 : 112,479.99 = 45,209.34 : x
2. Step 2: Convert to fraction form
   81,511.32/112,479.99 = 45,209.34/x
3. Step 3: Cross multiply
   81,511.32x = 112,479.99 × 45,209.34
4. Step 4: Simplify right side
   81,511.32x = 5,085,146,111.11
5. Step 5: Solve for x
   x = 5,085,146,111.11/81,511.32
6. Step 6: Final answer
   x = 62,385.77