Finding the Fourth Proportional to 39,870,744.75, 55,021,649.83 and 21,536,030.25

Step by Step Solution

1. Step 1: Write the proportion equation
   39,870,744.75 : 55,021,649.83 = 21,536,030.25 : x
2. Step 2: Convert to fraction form
   39,870,744.75/55,021,649.83 = 21,536,030.25/x
3. Step 3: Cross multiply
   39,870,744.75x = 55,021,649.83 × 21,536,030.25
4. Step 4: Simplify right side
   39,870,744.75x = 1,184,947,915,089,947.25
5. Step 5: Solve for x
   x = 1,184,947,915,089,947.25/39,870,744.75
6. Step 6: Final answer
   x = 29,719,733.67