Finding the Fourth Proportional to 101,019.02, 139,465.98 and 89,810

Step by Step Solution

1. Step 1: Write the proportion equation
   101,019.02 : 139,465.98 = 89,810 : x
2. Step 2: Convert to fraction form
   101,019.02/139,465.98 = 89,810/x
3. Step 3: Cross multiply
   101,019.02x = 139,465.98 × 89,810
4. Step 4: Simplify right side
   101,019.02x = 12,525,439,663.80
5. Step 5: Solve for x
   x = 12,525,439,663.80/101,019.02
6. Step 6: Final answer
   x = 123,990.90