Finding the Fourth Proportional to 83,698.18, 115,548.52 and 64,535.94

Step by Step Solution

1. Step 1: Write the proportion equation
   83,698.18 : 115,548.52 = 64,535.94 : x
2. Step 2: Convert to fraction form
   83,698.18/115,548.52 = 64,535.94/x
3. Step 3: Cross multiply
   83,698.18x = 115,548.52 × 64,535.94
4. Step 4: Simplify right side
   83,698.18x = 7,457,032,353.81
5. Step 5: Solve for x
   x = 7,457,032,353.81/83,698.18
6. Step 6: Final answer
   x = 89,094.32