Finding the Fourth Proportional to 98,783.72, 136,320.48 and 53,460.72

Step by Step Solution

1. Step 1: Write the proportion equation
   98,783.72 : 136,320.48 = 53,460.72 : x
2. Step 2: Convert to fraction form
   98,783.72/136,320.48 = 53,460.72/x
3. Step 3: Cross multiply
   98,783.72x = 136,320.48 × 53,460.72
4. Step 4: Simplify right side
   98,783.72x = 7,287,791,011.55
5. Step 5: Solve for x
   x = 7,287,791,011.55/98,783.72
6. Step 6: Final answer
   x = 73,775.22