Finding the Fourth Proportional to 113,310.72, 156,340.80 and 70,848

Step by Step Solution

1. Step 1: Write the proportion equation
   113,310.72 : 156,340.80 = 70,848 : x
2. Step 2: Convert to fraction form
   113,310.72/156,340.80 = 70,848/x
3. Step 3: Cross multiply
   113,310.72x = 156,340.80 × 70,848
4. Step 4: Simplify right side
   113,310.72x = 11,076,432,998.40
5. Step 5: Solve for x
   x = 11,076,432,998.40/113,310.72
6. Step 6: Final answer
   x = 97,752.74