Finding the Fourth Proportional to 56,148, 77,484.32 and 30,997.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,148 : 77,484.32 = 30,997.50 : x
2. Step 2: Convert to fraction form
   56,148/77,484.32 = 30,997.50/x
3. Step 3: Cross multiply
   56,148x = 77,484.32 × 30,997.50
4. Step 4: Simplify right side
   56,148x = 2,401,820,054.21
5. Step 5: Solve for x
   x = 2,401,820,054.21/56,148
6. Step 6: Final answer
   x = 42,776.59