Finding the Fourth Proportional to 72,612,492.80, 101,912,581.60 and 72,612,492.80

Step by Step Solution

1. Step 1: Write the proportion equation
   72,612,492.80 : 101,912,581.60 = 72,612,492.80 : x
2. Step 2: Convert to fraction form
   72,612,492.80/101,912,581.60 = 72,612,492.80/x
3. Step 3: Cross multiply
   72,612,492.80x = 101,912,581.60 × 72,612,492.80
4. Step 4: Simplify right side
   72,612,492.80x = 7,400,126,597,659,412
5. Step 5: Solve for x
   x = 7,400,126,597,659,412/72,612,492.80
6. Step 6: Final answer
   x = 101,912,581.60