Finding the Fourth Proportional to 209,111,196.96, 313,681,776.96 and 55,756,450.08

Step by Step Solution

1. Step 1: Write the proportion equation
   209,111,196.96 : 313,681,776.96 = 55,756,450.08 : x
2. Step 2: Convert to fraction form
   209,111,196.96/313,681,776.96 = 55,756,450.08/x
3. Step 3: Cross multiply
   209,111,196.96x = 313,681,776.96 × 55,756,450.08
4. Step 4: Simplify right side
   209,111,196.96x = 17,489,782,338,075,932
5. Step 5: Solve for x
   x = 17,489,782,338,075,932/209,111,196.96
6. Step 6: Final answer
   x = 83,638,669.72