Finding the Fourth Proportional to 116,980.31, 161,432.35 and 63,265.20

Step by Step Solution

1. Step 1: Write the proportion equation
   116,980.31 : 161,432.35 = 63,265.20 : x
2. Step 2: Convert to fraction form
   116,980.31/161,432.35 = 63,265.20/x
3. Step 3: Cross multiply
   116,980.31x = 161,432.35 × 63,265.20
4. Step 4: Simplify right side
   116,980.31x = 10,213,049,592.89
5. Step 5: Solve for x
   x = 10,213,049,592.89/116,980.31
6. Step 6: Final answer
   x = 87,305.71