Finding the Fourth Proportional to 28,613,432.34, 42,939,055.71 and 13,471,694.10

Step by Step Solution

1. Step 1: Write the proportion equation
   28,613,432.34 : 42,939,055.71 = 13,471,694.10 : x
2. Step 2: Convert to fraction form
   28,613,432.34/42,939,055.71 = 13,471,694.10/x
3. Step 3: Cross multiply
   28,613,432.34x = 42,939,055.71 × 13,471,694.10
4. Step 4: Simplify right side
   28,613,432.34x = 578,461,823,467,978.25
5. Step 5: Solve for x
   x = 578,461,823,467,978.25/28,613,432.34
6. Step 6: Final answer
   x = 20,216,442.98