Finding the Fourth Proportional to 111,218,109.45, 166,827,164.18 and 103,659,837.45

Step by Step Solution

1. Step 1: Write the proportion equation
   111,218,109.45 : 166,827,164.18 = 103,659,837.45 : x
2. Step 2: Convert to fraction form
   111,218,109.45/166,827,164.18 = 103,659,837.45/x
3. Step 3: Cross multiply
   111,218,109.45x = 166,827,164.18 × 103,659,837.45
4. Step 4: Simplify right side
   111,218,109.45x = 17,293,276,721,143,264
5. Step 5: Solve for x
   x = 17,293,276,721,143,264/111,218,109.45
6. Step 6: Final answer
   x = 155,489,756.18