Finding the Fourth Proportional to 156,993.18, 216,643.98 and 89,014.74

Step by Step Solution

1. Step 1: Write the proportion equation
   156,993.18 : 216,643.98 = 89,014.74 : x
2. Step 2: Convert to fraction form
   156,993.18/216,643.98 = 89,014.74/x
3. Step 3: Cross multiply
   156,993.18x = 216,643.98 × 89,014.74
4. Step 4: Simplify right side
   156,993.18x = 19,284,507,552.27
5. Step 5: Solve for x
   x = 19,284,507,552.27/156,993.18
6. Step 6: Final answer
   x = 122,836.59