Finding the Fourth Proportional to 116,978.76, 161,430.99 and 63,264.15

Step by Step Solution

1. Step 1: Write the proportion equation
   116,978.76 : 161,430.99 = 63,264.15 : x
2. Step 2: Convert to fraction form
   116,978.76/161,430.99 = 63,264.15/x
3. Step 3: Cross multiply
   116,978.76x = 161,430.99 × 63,264.15
4. Step 4: Simplify right side
   116,978.76x = 10,212,794,366.01
5. Step 5: Solve for x
   x = 10,212,794,366.01/116,978.76
6. Step 6: Final answer
   x = 87,304.69