Finding the Fourth Proportional to 118,389.31, 177,585.50 and 39,503.53

Step by Step Solution

1. Step 1: Write the proportion equation
   118,389.31 : 177,585.50 = 39,503.53 : x
2. Step 2: Convert to fraction form
   118,389.31/177,585.50 = 39,503.53/x
3. Step 3: Cross multiply
   118,389.31x = 177,585.50 × 39,503.53
4. Step 4: Simplify right side
   118,389.31x = 7,015,254,126.82
5. Step 5: Solve for x
   x = 7,015,254,126.82/118,389.31
6. Step 6: Final answer
   x = 59,255.81