Finding the Fourth Proportional to 52,846.79, 72,926.63 and 28,972.94

Step by Step Solution

1. Step 1: Write the proportion equation
   52,846.79 : 72,926.63 = 28,972.94 : x
2. Step 2: Convert to fraction form
   52,846.79/72,926.63 = 28,972.94/x
3. Step 3: Cross multiply
   52,846.79x = 72,926.63 × 28,972.94
4. Step 4: Simplify right side
   52,846.79x = 2,112,898,875.39
5. Step 5: Solve for x
   x = 2,112,898,875.39/52,846.79
6. Step 6: Final answer
   x = 39,981.59