Finding the Fourth Proportional to 42,893,273.86, 64,303,748.72 and 18,613,910.64

Step by Step Solution

1. Step 1: Write the proportion equation
   42,893,273.86 : 64,303,748.72 = 18,613,910.64 : x
2. Step 2: Convert to fraction form
   42,893,273.86/64,303,748.72 = 18,613,910.64/x
3. Step 3: Cross multiply
   42,893,273.86x = 64,303,748.72 × 18,613,910.64
4. Step 4: Simplify right side
   42,893,273.86x = 1,196,944,232,491,094.50
5. Step 5: Solve for x
   x = 1,196,944,232,491,094.50/42,893,273.86
6. Step 6: Final answer
   x = 27,905,173.11