Finding the Fourth Proportional to 89,223.39, 134,001.50 and 78,553.53

Step by Step Solution

1. Step 1: Write the proportion equation
   89,223.39 : 134,001.50 = 78,553.53 : x
2. Step 2: Convert to fraction form
   89,223.39/134,001.50 = 78,553.53/x
3. Step 3: Cross multiply
   89,223.39x = 134,001.50 × 78,553.53
4. Step 4: Simplify right side
   89,223.39x = 10,526,290,457.53
5. Step 5: Solve for x
   x = 10,526,290,457.53/89,223.39
6. Step 6: Final answer
   x = 117,976.80