Finding the Fourth Proportional to 76,547.37, 105,637.67 and 42,090.32

Step by Step Solution

1. Step 1: Write the proportion equation
   76,547.37 : 105,637.67 = 42,090.32 : x
2. Step 2: Convert to fraction form
   76,547.37/105,637.67 = 42,090.32/x
3. Step 3: Cross multiply
   76,547.37x = 105,637.67 × 42,090.32
4. Step 4: Simplify right side
   76,547.37x = 4,446,323,070.78
5. Step 5: Solve for x
   x = 4,446,323,070.78/76,547.37
6. Step 6: Final answer
   x = 58,085.90