Finding the Fourth Proportional to 245,556,665.78, 368,117,126.69 and 90,074,709.75

Step by Step Solution

1. Step 1: Write the proportion equation
   245,556,665.78 : 368,117,126.69 = 90,074,709.75 : x
2. Step 2: Convert to fraction form
   245,556,665.78/368,117,126.69 = 90,074,709.75/x
3. Step 3: Cross multiply
   245,556,665.78x = 368,117,126.69 × 90,074,709.75
4. Step 4: Simplify right side
   245,556,665.78x = 33,158,043,341,535,792
5. Step 5: Solve for x
   x = 33,158,043,341,535,792/245,556,665.78
6. Step 6: Final answer
   x = 135,032,145.17