Finding the Fourth Proportional to 157,260.72, 215,799.18 and 143,004.72

Step by Step Solution

1. Step 1: Write the proportion equation
   157,260.72 : 215,799.18 = 143,004.72 : x
2. Step 2: Convert to fraction form
   157,260.72/215,799.18 = 143,004.72/x
3. Step 3: Cross multiply
   157,260.72x = 215,799.18 × 143,004.72
4. Step 4: Simplify right side
   157,260.72x = 30,860,301,312.13
5. Step 5: Solve for x
   x = 30,860,301,312.13/157,260.72
6. Step 6: Final answer
   x = 196,236.55