Finding the Fourth Proportional to 93,156.98, 139,560.51 and 72,278.42

Step by Step Solution

1. Step 1: Write the proportion equation
   93,156.98 : 139,560.51 = 72,278.42 : x
2. Step 2: Convert to fraction form
   93,156.98/139,560.51 = 72,278.42/x
3. Step 3: Cross multiply
   93,156.98x = 139,560.51 × 72,278.42
4. Step 4: Simplify right side
   93,156.98x = 10,087,213,157.19
5. Step 5: Solve for x
   x = 10,087,213,157.19/93,156.98
6. Step 6: Final answer
   x = 108,281.88