Finding the Fourth Proportional to 42,772,478.84, 64,133,096.52 and 13,613,722.80

Step by Step Solution

1. Step 1: Write the proportion equation
   42,772,478.84 : 64,133,096.52 = 13,613,722.80 : x
2. Step 2: Convert to fraction form
   42,772,478.84/64,133,096.52 = 13,613,722.80/x
3. Step 3: Cross multiply
   42,772,478.84x = 64,133,096.52 × 13,613,722.80
4. Step 4: Simplify right side
   42,772,478.84x = 873,090,198,328,924.75
5. Step 5: Solve for x
   x = 873,090,198,328,924.75/42,772,478.84
6. Step 6: Final answer
   x = 20,412,429.25