Finding the Fourth Proportional to 400,156,862.50, 552,216,470.25 and 217,016,510.50

Step by Step Solution

1. Step 1: Write the proportion equation
   400,156,862.50 : 552,216,470.25 = 217,016,510.50 : x
2. Step 2: Convert to fraction form
   400,156,862.50/552,216,470.25 = 217,016,510.50/x
3. Step 3: Cross multiply
   400,156,862.50x = 552,216,470.25 × 217,016,510.50
4. Step 4: Simplify right side
   400,156,862.50x = 119,840,091,414,282,064
5. Step 5: Solve for x
   x = 119,840,091,414,282,064/400,156,862.50
6. Step 6: Final answer
   x = 299,482,784.49