Finding the Fourth Proportional to 79,621,383.78, 109,820,909.17 and 53,146,389.17

Step by Step Solution

1. Step 1: Write the proportion equation
   79,621,383.78 : 109,820,909.17 = 53,146,389.17 : x
2. Step 2: Convert to fraction form
   79,621,383.78/109,820,909.17 = 53,146,389.17/x
3. Step 3: Cross multiply
   79,621,383.78x = 109,820,909.17 × 53,146,389.17
4. Step 4: Simplify right side
   79,621,383.78x = 5,836,584,778,097,984
5. Step 5: Solve for x
   x = 5,836,584,778,097,984/79,621,383.78
6. Step 6: Final answer
   x = 73,304,236.89