Finding the Fourth Proportional to 89,147.22, 133,887.43 and 78,477.39

Step by Step Solution

1. Step 1: Write the proportion equation
   89,147.22 : 133,887.43 = 78,477.39 : x
2. Step 2: Convert to fraction form
   89,147.22/133,887.43 = 78,477.39/x
3. Step 3: Cross multiply
   89,147.22x = 133,887.43 × 78,477.39
4. Step 4: Simplify right side
   89,147.22x = 10,507,136,158.30
5. Step 5: Solve for x
   x = 10,507,136,158.30/89,147.22
6. Step 6: Final answer
   x = 117,862.75