Finding the Fourth Proportional to 99,427.86, 137,213.33 and 54,108.76

Step by Step Solution

1. Step 1: Write the proportion equation
   99,427.86 : 137,213.33 = 54,108.76 : x
2. Step 2: Convert to fraction form
   99,427.86/137,213.33 = 54,108.76/x
3. Step 3: Cross multiply
   99,427.86x = 137,213.33 × 54,108.76
4. Step 4: Simplify right side
   99,427.86x = 7,424,443,592.61
5. Step 5: Solve for x
   x = 7,424,443,592.61/99,427.86
6. Step 6: Final answer
   x = 74,671.66