Finding the Fourth Proportional to 18,158,389,100.75, 25,058,507,381.60 and 10,129,723,245.10

Step by Step Solution

1. Step 1: Write the proportion equation
   18,158,389,100.75 : 25,058,507,381.60 = 10,129,723,245.10 : x
2. Step 2: Convert to fraction form
   18,158,389,100.75/25,058,507,381.60 = 10,129,723,245.10/x
3. Step 3: Cross multiply
   18,158,389,100.75x = 25,058,507,381.60 × 10,129,723,245.10
4. Step 4: Simplify right side
   18,158,389,100.75x = 253,835,744,710,727,499,776
5. Step 5: Solve for x
   x = 253,835,744,710,727,499,776/18,158,389,100.75
6. Step 6: Final answer
   x = 13,978,979,264.21