Finding the Fourth Proportional to 91,870.16, 137,807.64 and 25,312.88

Step by Step Solution

1. Step 1: Write the proportion equation
   91,870.16 : 137,807.64 = 25,312.88 : x
2. Step 2: Convert to fraction form
   91,870.16/137,807.64 = 25,312.88/x
3. Step 3: Cross multiply
   91,870.16x = 137,807.64 × 25,312.88
4. Step 4: Simplify right side
   91,870.16x = 3,488,308,254.40
5. Step 5: Solve for x
   x = 3,488,308,254.40/91,870.16
6. Step 6: Final answer
   x = 37,969.98