Finding the Fourth Proportional to 78,529.50, 117,832.05 and 39,090.06

Step by Step Solution

1. Step 1: Write the proportion equation
   78,529.50 : 117,832.05 = 39,090.06 : x
2. Step 2: Convert to fraction form
   78,529.50/117,832.05 = 39,090.06/x
3. Step 3: Cross multiply
   78,529.50x = 117,832.05 × 39,090.06
4. Step 4: Simplify right side
   78,529.50x = 4,606,061,904.42
5. Step 5: Solve for x
   x = 4,606,061,904.42/78,529.50
6. Step 6: Final answer
   x = 58,653.91