Finding the Fourth Proportional to 42,705,681.18, 64,060,293.33 and 12,413,544.18

Step by Step Solution

1. Step 1: Write the proportion equation
   42,705,681.18 : 64,060,293.33 = 12,413,544.18 : x
2. Step 2: Convert to fraction form
   42,705,681.18/64,060,293.33 = 12,413,544.18/x
3. Step 3: Cross multiply
   42,705,681.18x = 64,060,293.33 × 12,413,544.18
4. Step 4: Simplify right side
   42,705,681.18x = 795,215,281,435,714.25
5. Step 5: Solve for x
   x = 795,215,281,435,714.25/42,705,681.18
6. Step 6: Final answer
   x = 18,620,831.22