Finding the Fourth Proportional to 328,720,870.52, 453,642,142.56 and 187,589,280.56

Step by Step Solution

1. Step 1: Write the proportion equation
   328,720,870.52 : 453,642,142.56 = 187,589,280.56 : x
2. Step 2: Convert to fraction form
   328,720,870.52/453,642,142.56 = 187,589,280.56/x
3. Step 3: Cross multiply
   328,720,870.52x = 453,642,142.56 × 187,589,280.56
4. Step 4: Simplify right side
   328,720,870.52x = 85,098,403,154,527,360
5. Step 5: Solve for x
   x = 85,098,403,154,527,360/328,720,870.52
6. Step 6: Final answer
   x = 258,877,396.56