Finding the Fourth Proportional to 113,099.54, 156,089.84 and 64,705.95

Step by Step Solution

1. Step 1: Write the proportion equation
   113,099.54 : 156,089.84 = 64,705.95 : x
2. Step 2: Convert to fraction form
   113,099.54/156,089.84 = 64,705.95/x
3. Step 3: Cross multiply
   113,099.54x = 156,089.84 × 64,705.95
4. Step 4: Simplify right side
   113,099.54x = 10,099,941,382.55
5. Step 5: Solve for x
   x = 10,099,941,382.55/113,099.54
6. Step 6: Final answer
   x = 89,301.35