Finding the Fourth Proportional to 113,060.26, 156,025.59 and 64,666.60

Step by Step Solution

1. Step 1: Write the proportion equation
   113,060.26 : 156,025.59 = 64,666.60 : x
2. Step 2: Convert to fraction form
   113,060.26/156,025.59 = 64,666.60/x
3. Step 3: Cross multiply
   113,060.26x = 156,025.59 × 64,666.60
4. Step 4: Simplify right side
   113,060.26x = 10,089,645,027.12
5. Step 5: Solve for x
   x = 10,089,645,027.12/113,060.26
6. Step 6: Final answer
   x = 89,241.31