Finding the Fourth Proportional to 42,885,215.10, 64,336,117.05 and 12,594,066.30

Step by Step Solution

1. Step 1: Write the proportion equation
   42,885,215.10 : 64,336,117.05 = 12,594,066.30 : x
2. Step 2: Convert to fraction form
   42,885,215.10/64,336,117.05 = 12,594,066.30/x
3. Step 3: Cross multiply
   42,885,215.10x = 64,336,117.05 × 12,594,066.30
4. Step 4: Simplify right side
   42,885,215.10x = 810,253,323,612,260.38
5. Step 5: Solve for x
   x = 810,253,323,612,260.38/42,885,215.10
6. Step 6: Final answer
   x = 18,893,535.26