Finding the Fourth Proportional to 81,433.58, 112,384.89 and 45,631.58

Step by Step Solution

1. Step 1: Write the proportion equation
   81,433.58 : 112,384.89 = 45,631.58 : x
2. Step 2: Convert to fraction form
   81,433.58/112,384.89 = 45,631.58/x
3. Step 3: Cross multiply
   81,433.58x = 112,384.89 × 45,631.58
4. Step 4: Simplify right side
   81,433.58x = 5,128,300,098.83
5. Step 5: Solve for x
   x = 5,128,300,098.83/81,433.58
6. Step 6: Final answer
   x = 62,975.25