Finding the Fourth Proportional to 72,670.30, 101,971.70 and 72,670.30

Step by Step Solution

1. Step 1: Write the proportion equation
   72,670.30 : 101,971.70 = 72,670.30 : x
2. Step 2: Convert to fraction form
   72,670.30/101,971.70 = 72,670.30/x
3. Step 3: Cross multiply
   72,670.30x = 101,971.70 × 72,670.30
4. Step 4: Simplify right side
   72,670.30x = 7,410,314,030.51
5. Step 5: Solve for x
   x = 7,410,314,030.51/72,670.30
6. Step 6: Final answer
   x = 101,971.70