Finding the Fourth Proportional to 58,931.34, 88,544.63 and 55,388.40

Step by Step Solution

1. Step 1: Write the proportion equation
   58,931.34 : 88,544.63 = 55,388.40 : x
2. Step 2: Convert to fraction form
   58,931.34/88,544.63 = 55,388.40/x
3. Step 3: Cross multiply
   58,931.34x = 88,544.63 × 55,388.40
4. Step 4: Simplify right side
   58,931.34x = 4,904,345,384.29
5. Step 5: Solve for x
   x = 4,904,345,384.29/58,931.34
6. Step 6: Final answer
   x = 83,221.35