Finding the Fourth Proportional to 39,870,766.04, 55,021,678.24 and 21,536,051.52

Step by Step Solution

1. Step 1: Write the proportion equation
   39,870,766.04 : 55,021,678.24 = 21,536,051.52 : x
2. Step 2: Convert to fraction form
   39,870,766.04/55,021,678.24 = 21,536,051.52/x
3. Step 3: Cross multiply
   39,870,766.04x = 55,021,678.24 × 21,536,051.52
4. Step 4: Simplify right side
   39,870,766.04x = 1,184,949,697,293,503
5. Step 5: Solve for x
   x = 1,184,949,697,293,503/39,870,766.04
6. Step 6: Final answer
   x = 29,719,762.50