Finding the Fourth Proportional to 83,642.42, 115,426.80 and 45,402.00

Step by Step Solution

1. Step 1: Write the proportion equation
   83,642.42 : 115,426.80 = 45,402.00 : x
2. Step 2: Convert to fraction form
   83,642.42/115,426.80 = 45,402.00/x
3. Step 3: Cross multiply
   83,642.42x = 115,426.80 × 45,402.00
4. Step 4: Simplify right side
   83,642.42x = 5,240,606,996.47
5. Step 5: Solve for x
   x = 5,240,606,996.47/83,642.42
6. Step 6: Final answer
   x = 62,654.90