Finding the Fourth Proportional to 99,018.61, 148,468.57 and 31,521.49

Step by Step Solution

1. Step 1: Write the proportion equation
   99,018.61 : 148,468.57 = 31,521.49 : x
2. Step 2: Convert to fraction form
   99,018.61/148,468.57 = 31,521.49/x
3. Step 3: Cross multiply
   99,018.61x = 148,468.57 × 31,521.49
4. Step 4: Simplify right side
   99,018.61x = 4,679,950,094.59
5. Step 5: Solve for x
   x = 4,679,950,094.59/99,018.61
6. Step 6: Final answer
   x = 47,263.34