Finding the Fourth Proportional to 72,578,343.30, 108,796,656.15 and 64,925,592.90

Step by Step Solution

1. Step 1: Write the proportion equation
   72,578,343.30 : 108,796,656.15 = 64,925,592.90 : x
2. Step 2: Convert to fraction form
   72,578,343.30/108,796,656.15 = 64,925,592.90/x
3. Step 3: Cross multiply
   72,578,343.30x = 108,796,656.15 × 64,925,592.90
4. Step 4: Simplify right side
   72,578,343.30x = 7,063,687,406,076,182
5. Step 5: Solve for x
   x = 7,063,687,406,076,182/72,578,343.30
6. Step 6: Final answer
   x = 97,325,001.99