Finding the Fourth Proportional to 90,460.86, 124,754.28 and 56,472.49

Step by Step Solution

1. Step 1: Write the proportion equation
   90,460.86 : 124,754.28 = 56,472.49 : x
2. Step 2: Convert to fraction form
   90,460.86/124,754.28 = 56,472.49/x
3. Step 3: Cross multiply
   90,460.86x = 124,754.28 × 56,472.49
4. Step 4: Simplify right side
   90,460.86x = 7,045,184,773.93
5. Step 5: Solve for x
   x = 7,045,184,773.93/90,460.86
6. Step 6: Final answer
   x = 77,881.03