Finding the Fourth Proportional to 156,993, 216,669.96 and 89,925

Step by Step Solution

1. Step 1: Write the proportion equation
   156,993 : 216,669.96 = 89,925 : x
2. Step 2: Convert to fraction form
   156,993/216,669.96 = 89,925/x
3. Step 3: Cross multiply
   156,993x = 216,669.96 × 89,925
4. Step 4: Simplify right side
   156,993x = 19,484,046,153
5. Step 5: Solve for x
   x = 19,484,046,153/156,993
6. Step 6: Final answer
   x = 124,107.74