Finding the Fourth Proportional to 62,980.34, 94,009.71 and 55,507.21

Step by Step Solution

1. Step 1: Write the proportion equation
   62,980.34 : 94,009.71 = 55,507.21 : x
2. Step 2: Convert to fraction form
   62,980.34/94,009.71 = 55,507.21/x
3. Step 3: Cross multiply
   62,980.34x = 94,009.71 × 55,507.21
4. Step 4: Simplify right side
   62,980.34x = 5,218,216,688.14
5. Step 5: Solve for x
   x = 5,218,216,688.14/62,980.34
6. Step 6: Final answer
   x = 82,854.70