Finding the Fourth Proportional to 51,528,103.16, 77,292,103.98 and 13,189,556.12

Step by Step Solution

1. Step 1: Write the proportion equation
   51,528,103.16 : 77,292,103.98 = 13,189,556.12 : x
2. Step 2: Convert to fraction form
   51,528,103.16/77,292,103.98 = 13,189,556.12/x
3. Step 3: Cross multiply
   51,528,103.16x = 77,292,103.98 × 13,189,556.12
4. Step 4: Simplify right side
   51,528,103.16x = 1,019,448,543,077,085.38
5. Step 5: Solve for x
   x = 1,019,448,543,077,085.38/51,528,103.16
6. Step 6: Final answer
   x = 19,784,321.19