Finding the Fourth Proportional to 42,680,309.27, 64,032,451.08 and 17,139,254.81

Step by Step Solution

1. Step 1: Write the proportion equation
   42,680,309.27 : 64,032,451.08 = 17,139,254.81 : x
2. Step 2: Convert to fraction form
   42,680,309.27/64,032,451.08 = 17,139,254.81/x
3. Step 3: Cross multiply
   42,680,309.27x = 64,032,451.08 × 17,139,254.81
4. Step 4: Simplify right side
   42,680,309.27x = 1,097,468,494,848,817.38
5. Step 5: Solve for x
   x = 1,097,468,494,848,817.38/42,680,309.27
6. Step 6: Final answer
   x = 25,713,695.93