Finding the Fourth Proportional to 12,501,675,168.40, 17,251,678,167.24 and 7,421,256,264.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,501,675,168.40 : 17,251,678,167.24 = 7,421,256,264.16 : x
2. Step 2: Convert to fraction form
   12,501,675,168.40/17,251,678,167.24 = 7,421,256,264.16/x
3. Step 3: Cross multiply
   12,501,675,168.40x = 17,251,678,167.24 × 7,421,256,264.16
4. Step 4: Simplify right side
   12,501,675,168.40x = 128,029,124,665,902,170,112
5. Step 5: Solve for x
   x = 128,029,124,665,902,170,112/12,501,675,168.40
6. Step 6: Final answer
   x = 10,240,957,546.99