Finding the Fourth Proportional to 54,605,667.55, 81,908,807.53 and 18,213,957.99

Step by Step Solution

1. Step 1: Write the proportion equation
   54,605,667.55 : 81,908,807.53 = 18,213,957.99 : x
2. Step 2: Convert to fraction form
   54,605,667.55/81,908,807.53 = 18,213,957.99/x
3. Step 3: Cross multiply
   54,605,667.55x = 81,908,807.53 × 18,213,957.99
4. Step 4: Simplify right side
   54,605,667.55x = 1,491,883,579,389,332.75
5. Step 5: Solve for x
   x = 1,491,883,579,389,332.75/54,605,667.55
6. Step 6: Final answer
   x = 27,321,039.12