Finding the Fourth Proportional to 142,105,578.30, 196,117,091.60 and 112,977,297.09

Step by Step Solution

1. Step 1: Write the proportion equation
   142,105,578.30 : 196,117,091.60 = 112,977,297.09 : x
2. Step 2: Convert to fraction form
   142,105,578.30/196,117,091.60 = 112,977,297.09/x
3. Step 3: Cross multiply
   142,105,578.30x = 196,117,091.60 × 112,977,297.09
4. Step 4: Simplify right side
   142,105,578.30x = 22,156,778,921,555,056
5. Step 5: Solve for x
   x = 22,156,778,921,555,056/142,105,578.30
6. Step 6: Final answer
   x = 155,917,728.12