Finding the Fourth Proportional to 23,131,103.76, 31,921,110.72 and 12,817,999.08

Step by Step Solution

1. Step 1: Write the proportion equation
   23,131,103.76 : 31,921,110.72 = 12,817,999.08 : x
2. Step 2: Convert to fraction form
   23,131,103.76/31,921,110.72 = 12,817,999.08/x
3. Step 3: Cross multiply
   23,131,103.76x = 31,921,110.72 × 12,817,999.08
4. Step 4: Simplify right side
   23,131,103.76x = 409,164,767,841,538.12
5. Step 5: Solve for x
   x = 409,164,767,841,538.12/23,131,103.76
6. Step 6: Final answer
   x = 17,688,942.65