Finding the Fourth Proportional to 72,317.34, 99,780.75 and 42,084.36

Step by Step Solution

1. Step 1: Write the proportion equation
   72,317.34 : 99,780.75 = 42,084.36 : x
2. Step 2: Convert to fraction form
   72,317.34/99,780.75 = 42,084.36/x
3. Step 3: Cross multiply
   72,317.34x = 99,780.75 × 42,084.36
4. Step 4: Simplify right side
   72,317.34x = 4,199,209,004.07
5. Step 5: Solve for x
   x = 4,199,209,004.07/72,317.34
6. Step 6: Final answer
   x = 58,066.42