Finding the Fourth Proportional to 72,620.40, 97,726.50 and 72,620.40

Step by Step Solution

1. Step 1: Write the proportion equation
   72,620.40 : 97,726.50 = 72,620.40 : x
2. Step 2: Convert to fraction form
   72,620.40/97,726.50 = 72,620.40/x
3. Step 3: Cross multiply
   72,620.40x = 97,726.50 × 72,620.40
4. Step 4: Simplify right side
   72,620.40x = 7,096,937,520.60
5. Step 5: Solve for x
   x = 7,096,937,520.60/72,620.40
6. Step 6: Final answer
   x = 97,726.50