Finding the Fourth Proportional to 97,856.72, 135,041.60 and 53,144.72

Step by Step Solution

1. Step 1: Write the proportion equation
   97,856.72 : 135,041.60 = 53,144.72 : x
2. Step 2: Convert to fraction form
   97,856.72/135,041.60 = 53,144.72/x
3. Step 3: Cross multiply
   97,856.72x = 135,041.60 × 53,144.72
4. Step 4: Simplify right side
   97,856.72x = 7,176,748,020.35
5. Step 5: Solve for x
   x = 7,176,748,020.35/97,856.72
6. Step 6: Final answer
   x = 73,339.35