Finding the Fourth Proportional to 83,613.64, 115,392.82 and 47,802.72

Step by Step Solution

1. Step 1: Write the proportion equation
   83,613.64 : 115,392.82 = 47,802.72 : x
2. Step 2: Convert to fraction form
   83,613.64/115,392.82 = 47,802.72/x
3. Step 3: Cross multiply
   83,613.64x = 115,392.82 × 47,802.72
4. Step 4: Simplify right side
   83,613.64x = 5,516,090,664.47
5. Step 5: Solve for x
   x = 5,516,090,664.47/83,613.64
6. Step 6: Final answer
   x = 65,971.18